Mars Pathfinder ASI/MET Keywords
The keywords shown below in uppercase characters are formal PDS
keywords, which are either present in or have been submitted to the
PDS Data Dictionary. Those shown in lowercase are only used as column
names in ASI/MET tables, and are only defined locally.
Where parentheses are present in a keyword, it indicates slight
variations in the keyword as used in the different ASI/MET data sets.
However, all applications of the words have very similar meanings.
-
+/-12_volt_reference
- This is the voltage from the twelve volt power supply. Calibrated
values are given in units of Volts.
-
+/-12_volt_ref_std_dev_diff
- In cases where the +/-12_volt_reference value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts, which corresponds to 0.7 mV. This is twice the expected noise
level.
-
+5_volt_reference(_motherboard)
- Reference five Volt supply used to offset sensor voltages into the
+/- three Volt range. Calibrated values are shown in units of Volts.
-
+5_volt_ref_std_dev_diff
- In cases where the +5_volt_reference value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts which corresponds to a value of 1.5 mV. This is twice the
expected noise level.
-
+5_volt_to_adc
- The voltage of the +5 V Analog-to-Digital converter supply.
Calibrated values are shown in units of Volts.
-
+5_volt_to_adc_std_dev_diff
- In cases where the +5_volt_to_adc value is an average of multiple
values, this keyword provides a sense of the degree of scatter of the
values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts which corresponds to a value of 1.5 mV. This is twice the
expected noise level.
-
-5_volt_to_adc
- The voltage of the -5 V Analog-to-Digital converter supply.
Calibrated values are shown in units of Volts.
-
-5_volt_to_adc_std_dev_diff
- In cases where the -5_volt_to_adc value is an average of multiple
values, this keyword provides a sense of the degree of scatter of the
values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts which corresponds to a value of 1.5 mV. This is twice the
expected noise level.
-
altitude
- The altitude above the landing site, in kilometers. Note that at
the landing site, the radius of Mars is 3,389.72 km.
-
APPLICATION_PACKET_ID
- The id of the telemetry packet queue to which the data were
directed.
-
bottom_mast_thermocouple
- The atmospheric temperature recorded by the bottom mast
thermocouple (the thermocouple located 27.3 cm above the plane of the
lander petal). Calibrated values are reported in units of degrees
Kelvin.
-
bottom_mast_therm_std_dev_diff
- In cases where the bottom_mast_thermocouple value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
80 counts, which corresponds to 0.5 K. Large fluctuations are
expected.
-
BYTES
- The bytes element indicates the number of bytes allocated for a
particular data representation.
-
calib_+/-12_volt_reference
- Same as +/-12_volt_reference; calibrated to units of Volts.
-
calib_+5_volt_reference
- Same as +5_volt_reference; calibrated to units of Volts.
-
calib_+5_volt_to_adc
- Same as +5_volt_to_adc; calibrated to units of Volts.
-
calib_-5_volt_to_adc
- Same as -5_volt_to_adc; calibrated to units of Volts.
-
calib_bottom_mast_thermocouple
- Same as bottom_mast_thermocouple; calibrated to degrees Kelvin.
-
calib_circuit_board_temp
- Same as circuit_board_temperature; calibrated to degrees Kelvin.
-
calib_descent_thermocouple
- Same as descent_thermocouple; calibrated to degrees Kelvin.
-
calib_drive_current_prt_4
- Same as drive_current_prt_4; calibrated to Volts.
-
calib_drive_current_prt_5
- Same as drive_current_prt_5; calibrated to Volts.
-
calib_eng_hygrometer_voltage
- The engineering hygrometer voltage, calibrated to Volts.
-
calib_engacc_0_0v_ref_volt
- The engineering accelerometer 0.0 Volt (ground) reference,
calibrated to Volts.
-
calib_engacc_adc_temperature
- Temperature of the engineering accelerometer analog to digital
converter, calibrated to degrees Kelvin.
-
calib_engacc_multiplexer_temp
- Temperature of the engineering accelerometer multiplexer,
calibrated to degrees Kelvin.
-
calib_engacc_neg_2_5v_ref_volt
- The engineering accelerometer -2.5 Volt reference, calibrated to
Volts.
-
calib_engacc_pos_2_5v_ref_temp
- The engineering accelerometer +2.5 Volt reference temperature,
calibrated to degrees Kelvin.
-
calib_engacc_pos_2_5v_ref_volt
- The engineering accelerometer +2.5 Volt reference, calibrated to
Volts.
-
calib_mast_base_iso_block_prt
- Mast base isothermal block platinum resistance thermometer
temperature (PRT4), measured in degrees Kelvin.
-
calib_mid_mast_thermocouple
- Middle mast thermocouple temperature, measured in degrees Kelvin.
-
calib_neg_yz_ax_acc_head_temp
- Temperature of the engineering -YZ-axis accelerometer head,
calibrated to degrees Kelvin.
-
calib_neg_yz_axis_acc_amp_temp
- Temperature of the engineering -YZ-axis accelerometer first
amplifier, calibrated to degrees Kelvin.
-
calib_neg_yz_axis_acceleration
- Measurement of acceleration from the engineering -YZ-axis
accelerometer, calibrated to units of gravity, where 1 g = 9.795433
m/s2.
-
calib_pos_yz_axis_acc_amp_temp
- Temperature of the engineering +YZ-axis accelerometer first
amplifier, calibrated to degrees Kelvin.
-
calib_pos_yz_ax_acc_head_temp
- Temperature of the engineering +YZ-axis accelerometer head,
calibrated to degrees Kelvin.
-
calib_pos_yz_axis_acceleration
- Measurement of acceleration from the engineering +YZ-axis
accelerometer, calibrated to units of gravity, where 1 g = 9.795433
m/s2.
-
calib_pressure_transducer_0_12
- Pressure (0-12 mbar range), measured in millibars.
-
calib_pressure_transducer_6_10
- Pressure (6-10 mbar range), measured in millibars.
-
calib_pressure_transducer_prt
- Pressure sensor platinum resistance thermometer temperature
(PRT5), measured in degrees Kelvin.
-
calib_sci_hygrometer_voltage
- The science hygrometer voltage, calibrated to Volts.
-
calib_sciacc_0_0v_ref_volt
- The science accelerometer 0.0 Volt (ground) reference, calibrated
to Volts.
-
calib_sciacc_adc_temperature
- Temperature of the science accelerometer analog to digital
converter, calibrated to degrees Kelvin.
-
calib_sciacc_multiplexer_temp
- Temperature of the science accelerometer multiplexer, calibrated
to degrees Kelvin.
-
calib_sciacc_neg_2_5v_ref_volt
- The science accelerometer -2.5 Volt reference, calibrated to
Volts.
-
calib_sciacc_pos_2_5v_ref_temp
- The science accelerometer +2.5 Volt reference temperature,
calibrated to degrees Kelvin.
-
calib_sciacc_pos_2_5v_ref_volt
- The science accelerometer +2.5 Volt reference, calibrated to
Volts.
-
calib_sense_voltage_prt_4
- Unscaled mast based isothermal block platinum resistance
thermometer (PRT4) sensor voltage, measured in Volts.
-
calib_top_mast_thermocouple
- Top mast thermocouple temperature, measured in degrees Kelvin.
-
calib_wind_sensor_current
- Wind sensor current, measured in milliamps.
-
calib_wind_sensor_segment_1
- Same as wind_sensor_segment_1; calibrated to degrees Kelvin.
-
calib_wind_sensor_segment_2
- Same as wind_sensor_segment_2; calibrated to degrees Kelvin.
-
calib_wind_sensor_segment_3
- Same as wind_sensor_segment_3; calibrated to degrees Kelvin.
-
calib_wind_sensor_segment_4
- Same as wind_sensor_segment_4; calibrated to degrees Kelvin.
-
calib_wind_sensor_segment_5
- Same as wind_sensor_segment_5; calibrated to degrees Kelvin.
-
calib_wind_sensor_segment_6
- Same as wind_sensor_segment_6; calibrated to degrees Kelvin.
-
calib_wind_sensor_thermocouple
- Wind sensor thermocouple temperature, measured in degrees Kelvin.
-
calib_x_axis_acc_amp_temp
- Temperature of the engineering (or science, depending on context)
X-axis accelerometer first amplifier, calibrated to degrees Kelvin.
-
calib_x_axis_acc_head_temp
- Temperature of the engineering (or science, depending on context)
X-axis accelerometer head, calibrated to degrees Kelvin.
-
calib_x_axis_acceleration
- Measurement of acceleration from the engineering (or science,
depending on context) X-axis accelerometer, calibrated to units of
gravity, where 1 g = 9.795433 m/s2.
-
calib_y_axis_acc_amp_temp
- Temperature of the science Y-axis accelerometer first amplifier,
calibrated to degrees Kelvin.
-
calib_y_axis_acc_head_temp
- Temperature of the science, Y-axis accelerometer head, calibrated
to degrees Kelvin.
-
calib_y_axis_acceleration
- Measurement of acceleration from the science Y-axis accelerometer,
calibrated to units of gravity, where 1 g = 9.795433 m/s2.
-
calib_z_axis_acc_amp_temp
- Temperature of the science Z-axis accelerometer first amplifier,
calibrated to degrees Kelvin.
-
calib_z_axis_acc_head_temp
- Temperature of the science, Z-axis accelerometer head, calibrated
to degrees Kelvin.
-
calib_z_axis_acceleration
- Measurement of acceleration from the science Z-axis accelerometer,
calibrated to units of gravity, where 1 g = 9.795433 m/s2.
-
circuit_board_temperature
- The measured temperature of the MET electronics board. Calibrated
values are shown in units of degrees Kelvin.
-
circuit_board_temp_std_dev_diff
- In cases where the circuit_board_temperature value is an average
of multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 3
counts, which corresponds to a value of 0.1 K. Only small
fluctuations are expected.
-
COLUMNS
- The columns element represents the number of columns in each row
of a data object.
-
data_record_type
- Indicates science data (0) or housekeeping data (1).
-
DATA_SET_ID
- A unique alphanumeric identifier for a data set.
-
DATA_SET_NAME
- The full name given to a data set. Typically identifies the
instrument that acquired the data, the target of that instrument, and
the processing level of the data.
-
^DATA_TABLE
- A pointer to the first record of the science data within a PDS
table file.
-
DATA_TAKING_DELAY
- The length of time, in seconds, between ASI-MET electronics
power-on and when data-taking is to begin. Maximum value is 8,192
seconds, or 2.27 hours. A zero value is valid. No consistency checking
is performed.
-
DATA_TYPE
- The data_type element supplies the internal representation and/or
mathematical properties of a value being stored.
-
density
- Atmospheric density, measured in kg/m3.
-
descent_thermocouple
- The atmospheric temperature recorded by the descent thermocouple
(the thermocouple located at the top of the MET mast, just beneath the
wind sensor). Calibrated values are reported in units of degrees
Kelvin.
-
descent_therm_std_dev_diff
- In cases where the descent_thermocouple value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
80 counts, which corresponds to 0.5 K. Large fluctuations are
expected.
-
DESCRIPTION
- The description element provides a free-form, unlimited-length
character string that represents or gives an account of something.
-
drive_current_prt_4
- The voltage across the mast base isothermal block platinum
resistance thermometer (PRT4) on the constant current supply leads.
This is a failure diagnostic that allows problems with the PRT and
current source to be distinguished. Calibrated measurements are shown
in Volts.
-
drive_current_prt_4_std_dev_diff
- In cases where the drive_current_prt_4 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts, which corresponds to a value of 1.5 uA. Only small
fluctuations are expected.
-
drive_current_(for_)prt_5
- The voltage across the pressure sensor platinum resistance
thermometer (PRT5) current supply leads. This is a failure diagnostic
that allows problems with the PRT and current source to be
distinguished. Calibrated measurements are shown in Volts.
-
drive_current_prt_5_std_dev_diff
- In cases where the drive_current_prt_5 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma
is a predetermined reference value. In this case, the reference value
is 2 counts, which corresponds to a value of 1.5 uA. Only small
fluctuations are expected.
-
EARTH_RECEIVED_START_TIME
- The earth_received_start_time element provides the beginning time
at which telemetry was received during a time period of interest.
-
EARTH_RECEIVED_STOP_TIME
- The earth_received_stop_time element provides the ending time for
receiving telemetry during a time period of interest.
-
east_longitude
- The angle increasing eastward between the prime meridian and the
vector from the coordinate system origin to the point of interest,
projected into the equatorial plane.
-
elapsed_time
- Elapsed time in seconds since a specified time.
-
error_count
- Number of bad measurements.
-
EXPECTED_DATA_RECORDS
- The number of data records expected.
-
EXPECTED_PACKETS
- The total number of telemetry packets which constitute a complete
data file, ie., a file without missing data.
-
FILE_RECORDS
- The number of physical file records, including both label records
and data records, in a file.
-
FORMAT
- The display specification for a collection of data. It is
equivalent to the FORTRAN language format specification. Example
values: 'Ew.deEXP', A6, I5.
-
^HEADER_TABLE
- A pointer to the first record of the header data within a PDS
table file.
-
hour_of_data_record
- Hour of sol, in Local Solar Time (LST) at which the data record
was obtained.
-
HOUSEKEEPING_AVERAGING_INT(ERVAL)
- The elapsed time, in seconds, over which the averaged samples were
collected for the 12 'housekeeping' measurements. The averaged data
is placed in a packet record. The maximum value is 8,192 seconds, or
2.27 hours. An averaging interval equal to the sampling interval is
permitted, hence yielding point sampled (unaveraged) measurements. An
averaging interval equal to the Session Duration is also permitted.
An inconsistency is indicated if the Housekeeping Averaging Interval
is greater than the Session Duration.
-
START_TIME
- Date and time at which the data file was acquired, recorded in
UTC system format. Shown as: "YYYY-MM-DDThh:mm:ss.fffZ".
-
INSTRUMENT_HOST_NAME
- The full name of the host on which an instrument is based.
-
INSTRUMENT_ID
- An abbreviated name or acronym which identifies an instrument.
-
INSTRUMENT_NAME
- The full name of an instrument.
-
INTERCHANGE_FORMAT
- The manner in which the data elements are stored.
-
mast_base_isothermal_block_prt
- The temperature of the mast base isothermal block platinum
resistance thermometer. When calibrated, this value is shown in
degrees Kelvin.
-
mast_base_iso_blck_prt_std_dev_diff
- In cases where the mast_base_isothermal_block_prt value is an
average of multiple values, this keyword provides a sense of the
degree of scatter of the values. The value can be any of the
following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 9
counts, which is equivalent to a value of 0.1 K. Only small
fluctuations are expected.
-
mean_molecular_weight
- The mean molecular weight used to evaluate temperatures, measured
in amu. This value is derived from the molecular weight as a function
of pressure measured by the Viking 1 Upper Atmosphere Mass
Spectrometer (cf. [SEIFF&KIRK1977]).
-
mid_mast_thermocouple
- The atmospheric temperature recorded by the middle mast
thermocouple (the thermocouple located 50.8 cm above the plane of the
lander petal). Calibrated values are reported in units of degrees
Kelvin.
-
mid_mast_therm_std_dev_diff
- In cases where the mid_mast_thermocouple value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma
is a predetermined reference value. In this case, the reference value
is 80 counts, which corresponds to 0.5 K. Large fluctuations are
expected.
-
minute_of_data_record
- Minute of hour in Local Solar Time (LST) at which the data record
was obtained.
-
MISSION_NAME
- A major planetary mission or project.
-
MPF_LOCAL_TIME
- Local time at the lander site on the surface of Mars, measured in
local hours, minutes, and seconds, from midnight. Local hours are
defined as one twenty-fourth of a local solar day. Local minutes are
one sixtieth of a local hour, and local seconds are one sixtieth of a
local minute. Format is hh:mm:ss. Based on the IAU standard for the
Martian prime meridian. See [DAVIESETAL1994] for more
details.
-
NAME
- A literal value representing the common term used to identify an
element or object (usually a COLUMN object).
-
neg_yz_axis_accelerometer_gain
- The gain range of the engineering -YZ-axis accelerometer in units
of gravity. (Valid values: 0.016, 0.800, 40.000)
-
negative_density_uncertainty
- The 3 sigma width of the density uncertainty envelope in the
negative direction, measured in kg/m3.
-
negative_pressure_uncertainty
- The 3 sigma width of the pressure uncertainty envelope in the
negative direction, in millibars.
-
negative_temp_uncertainty
- The 3 sigma width of the temperature uncertainty envelope in the
negative direction, in degrees Kelvin.
-
PDS_VERSION_ID
- The PDS_version_id represents the version number of the PDS
standards documents that is valid when a data product label is
created. Values for the PDS_version_id are formed by appending the
integer for the latest version number to the letters 'PDS'. The
version of the standards in use at the time this CD was created was
'PDS3'.
-
PLANET_DAY_NUMBER
- The Martian day (ie., sidereal day, equal to a rotation of 360
degrees) on which the image was taken. Starts with 1 as the first day
of surface operations, the day the spacecraft landed. Negative values
refer to pre-surface images.
-
planetocentric_latitude
- The angle between the equatorial plane and a vector connecting the
point of interest and the origin of the planetocentric coordinate
system. Positive in the hemisphere north of the equator (i.e.,
hemisphere to the north of the solar system invariant plane) and
negative in the southern hemisphere.
-
pos_yz_axis_accelerometer_gain
- The gain range of the engineering +YZ-axis accelerometer in units
of gravity. (Valid values: 0.016, 0.800, 40.000)
-
positive_density_uncertainty
- The 3 sigma width of the density uncertainty envelope in the
positive direction, measured in kg/m3.
-
positive_pressure_uncertainty
- The 3 sigma width of the pressure uncertainty envelope in the
positive direction, in millibars.
-
positive_temp_uncertainty
- The 3 sigma width of the temperature uncertainty envelope in the
positive direction, in degrees Kelvin.
-
pressure
- Atmospheric pressure, measured in millibars.
-
pressure_transducer_0_12
- Atmospheric pressure, measured in the 0 - 12 millibar range.
Calibrated values are shown in millibars.
-
pres_trans_0_12_std_dev_diff
- In cases where the pressure_transducer_0_12 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
13 counts, which corresponds to a value of 0.01 mbar. Only small
fluctuations are expected.
-
pressure_transducer_6_10
- Atmospheric pressure, measured in the 6 - 10 millibar range.
Calibrated values are shown in millibars.
-
pres_trans_6_10_std_dev_diff
- In cases where the pressure_transducer_6_10 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
39 counts, which corresponds to a value of 0.01 mbar. Only small
fluctuations are expected.
-
pressure_transducer_prt
- This is the measured temperature of the PRT located on the
pressure transducer. It is used to correct measured pressure for the
temperature dependence of gain and offset established during
pre-flight and in-flight calibration of the pressure transducer.
Calibrated values are shown in degrees Kelvin.
-
pressure_transducer_prt_std_dev_diff
- In cases where the pressure_transducer_prt value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
14 counts, which corresponds to a value of 0.1 K. Only small
fluctuations are expected.
-
PRODUCER_FULL_NAME
- The full name of the individual mainly responsible for the
production of a data set.
-
PRODUCER_ID
- A short name or acronym for the producer or producing team/group
of a data set.
-
PRODUCER_INSTITUTION_NAME
- A university, research center, NASA center, or other institution
associated with the production of a data set. This would generally be
an institution associated with the producer full name.
-
PRODUCT_CREATION_TIME
- Defines the UTC time when a product was created or last
modified. Has the form "YYYY-MM-DDThh:mm:ss.fffZ".
-
PRODUCT_ID
- A permanent, unique identifier assigned to each data product.
-
PRODUCT_NAME
- The full name of a product. It is related to product_id and
provides a brief, descriptive title for a particular data product
(i.e., a single file).
-
raw_+/-12_volt_reference
- Same as +/-12_volt_reference; measured in raw counts.
-
raw_+5_volt_reference
- Same as +5_volt_reference; measured in raw counts.
-
raw_+5_volt_to_adc
- Same as +5_volt_to_adc; measured in raw counts.
-
raw_-5_volt_to_adc
- Same as -5_volt_to_adc; measured in raw counts.
-
raw_bottom_mast_thermocouple
- Same as bottom_mast_thermocouple; measured in raw counts.
-
raw_circuit_board_temp
- Same as circuit_board_temperature; measured in raw counts.
-
raw_descent_thermocouple
- Same as descent_thermocouple; measured in raw counts.
-
raw_drive_current_prt_4
- Same as drive_current_prt_4; measured in raw counts.
-
raw_drive_current_prt_5
- Same as drive_current_prt_5; measured in raw counts.
-
raw_eng_hygrometer_voltage
- The engineering hygrometer voltage, measured in raw counts.
-
raw_engacc_0_0v_ref_volt
- The engineering accelerometer 0.0 Volt (ground) reference,
measured in raw counts.
-
raw_engacc_adc_temperature
- Temperature of the engineering accelerometer analog to digital
converter, measured in raw counts.
-
raw_engacc_multiplexer_temp
- Temperature of the engineering accelerometer multiplexer, measured
in raw counts.
-
raw_engacc_neg_2_5v_ref_volt
- The engineering accelerometer -2.5 Volt reference, measured in raw
counts.
-
raw_engacc_pos_2_5v_ref_temp
- The engineering accelerometer +2.5 Volt reference temperature,
measured in raw counts.
-
raw_engacc_pos_2_5v_ref_volt
- The engineering accelerometer +2.5 Volt reference, measured in raw
counts.
-
raw_mast_base_iso_block_prt
- Mast base isothermal block platinum resistance thermometer
temperature (PRT4), measured in raw counts.
-
raw_mid_mast_thermocouple
- Middle mast thermocouple temperature, measured in raw counts.
-
raw_neg_yz_axis_acc_amp_temp
- Temperature of the engineering -YZ-axis accelerometer first
amplifier, measured in raw counts.
-
raw_neg_yz_axis_acc_head_temp
- Temperature of the engineering -YZ-axis accelerometer head,
measured in raw counts.
-
raw_neg_yz_axis_acceleration
- Measurement of acceleration from the engineering -YZ-axis
accelerometer, measured in raw counts.
-
raw_pos_yz_axis_acc_amp_temp
- Temperature of the engineering +YZ-axis accelerometer first
amplifier, measured in raw counts.
-
raw_pos_yz_axis_acc_head_temp
- Temperature of the engineering +YZ-axis accelerometer head,
measured in raw counts.
-
raw_pos_yz_axis_acceleration
- Measurement of acceleration from the engineering +YZ-axis
accelerometer, measured in raw counts.
-
raw_pressure_transducer_0_12
- Pressure (0-12 mbar range), measured in raw counts.
-
raw_pressure_transducer_6_10
- Pressure (6-10 mbar range), measured in raw counts.
-
raw_pressure_transducer_prt
- Pressure sensor platinum resistance thermometer temperature
(PRT5), measured in raw counts.
-
raw_sci_hygrometer_voltage
- The science hygrometer voltage, measured in raw counts.
-
raw_sciacc_0_0v_ref_volt
- The science accelerometer 0.0 Volt (ground) reference, measured in
raw counts.
-
raw_sciacc_adc_temperature
- Temperature of the science accelerometer analog to digital
converter, measured in raw counts.
-
raw_sciacc_multiplexer_temp
- Temperature of the science accelerometer multiplexer, measured in
raw counts.
-
raw_sciacc_neg_2_5v_ref_volt
- The science accelerometer -2.5 Volt reference, measured in raw
counts.
-
raw_sciacc_pos_2_5v_ref_temp
- The science accelerometer +2.5 Volt reference temperature,
measured in raw counts.
-
raw_sciacc_pos_2_5v_ref_volt
- The science accelerometer +2.5 Volt reference, measured in raw
counts.
-
raw_sense_voltage_prt_4
- Unscaled mast based isothermal block platinum resistance
thermometer (PRT4) sensor voltage, measured in raw counts.
-
raw_top_mast_thermocouple
- Top mast thermocouple temperature, measured in raw counts.
-
raw_wind_sensor_current
- Wind sensor current, measured in raw counts.
-
raw_wind_sensor_segment_1
- Same as wind_sensor_segment_1; measured in raw counts.
-
raw_wind_sensor_segment_2
- Same as wind_sensor_segment_2; measured in raw counts.
-
raw_wind_sensor_segment_3
- Same as wind_sensor_segment_3; measured in raw counts.
-
raw_wind_sensor_segment_4
- Same as wind_sensor_segment_4; measured in raw counts.
-
raw_wind_sensor_segment_5
- Same as wind_sensor_segment_5; measured in raw counts.
-
raw_wind_sensor_segment_6
- Same as wind_sensor_segment_6; measured in raw counts.
-
raw_wind_sensor_thermocouple
- Wind sensor thermocouple temperature, measured in raw counts.
-
raw_x_axis_acc_amp_temp
- Temperature of the engineering (or science, depending on context)
X-axis accelerometer first amplifier, measured in raw counts.
-
raw_x_axis_acc_head_temp
- Temperature of the engineering (or science, depending on context)
X-axis accelerometer head, measured in raw counts.
-
raw_x_axis_acceleration
- Measurement of acceleration from the engineering (or science,
depending on context) X-axis accelerometer, measured in raw counts.
-
raw_y_axis_acc_amp_temp
- Temperature of the science Y-axis accelerometer first amplifier,
measured in raw counts.
-
raw_y_axis_acc_head_temp
- Temperature of the science Y-axis accelerometer head, measured in
raw counts.
-
raw_y_axis_acceleration
- Measurement of acceleration from the science Y-axis accelerometer,
measured in raw counts.
-
raw_z_axis_acc_amp_temp
- Temperature of the science Z-axis accelerometer first amplifier,
measured in raw counts.
-
raw_z_axis_acc_head_temp
- Temperature of the science Z-axis accelerometer head, measured in
raw counts.
-
raw_z_axis_acceleration
- Measurement of acceleration from the science Y-axis accelerometer,
measured in raw counts.
-
RECEIVED_DATA_RECORDS
- The number of data records received.
-
RECEIVED_PACKETS
- The total number of telemetry packets which constitute a
reconstructed data file.
-
RECORD_BYTES
- The number of bytes in a physical file record, including record
terminators and separators.
-
RECORD_TYPE
- The record format of a file.
-
ROWS
- The number of rows in a data object (usually a TABLE object).
Note: In PDS, the term 'rows' is synonymous with 'records'.
-
ROW_BYTES
- The number of bytes in each data object (usually a TABLE object)
row. Note: In the PDS, in labels for tables, the value of row_bytes
includes terminators, separators, and delimiters.
-
SAMPLING_INTERVAL
- The elapsed time, in seconds, between capturing all 24
measurements, both 'science' and 'housekeeping', for later
averaging. Maximum value is 8,192 seconds, or 2.27 hours. An
inconsistency is indicated if the Sampling Interval is greater than
either the Science Averaging Interval or the Housekeeping Averaging
Interval.
-
SCIENCE_AVERAGING_INTERVAL
- The elapsed time, in seconds, over which the averaged samples were
collected for the 12 'science' measurements. The averaged data is
placed in a packet record. The maximum value is 8,192 seconds, or 2.27
hours. An averaging interval equal to the sampling interval is
permitted, hence yielding point sampled (unaveraged) measurements. An
averaging interval equal to the Session Duration is also permitted. An
inconsistency is indicated if the Science Averaging Interval is
greater than the Session Duration.
-
second_of_data_record
- Second of minute, in Local Solar Time (LST) at which data record
was obtained.
-
sense_voltage_prt_4
- Unscaled voltage across PRT4, the Platinum Resistance Thermometer
that measures MET thermocouple cold (reference) junction temperature
in the thermocouple isothermal block. PRT4 temperature is derived from
a more sensitive scaled voltage. Calibrated values are shown in
Volts.
-
sense_voltage_prt_4_std_dev_diff
- In cases where the sense_voltage_prt_4 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following: value
is an average of multiple values, this keyword provides a sense of the
degree of scatter of the values. The value can be any of the
following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 3
counts, which corresponds to a value of 0.1 K. Only small
fluctuations are expected.
-
SESSION_DURATION
- The length, in seconds, of the data-taking portion of the session.
The maximum value used in the telemetry is 89,052 seconds, which is
equivalent to 24.74 hours. The ASI-MET electronics are autonomously
powered-off at the end of the duration.
-
SESSION_NUMBER
- The session number of the current file.
-
session_records
- The number of physical records in the table; does not include the
header record.
-
SOFTWARE_NAME
- The name of the telemetry processing software used to generate the
image data.
-
SOFTWARE_VERSION_ID
- Indicates the version or development level of a program or a
program library used to generate the data.
-
sol_of_data_record
- Sol on which the data record was obtained.
-
SPACECRAFT_CLOCK_(START_)COUNT
- The value of the lander clock (in seconds) when the data sample
was acquired. In specific cases in the MET surface data, this value
is calculated.
-
SPACECRAFT_CLOCK_(STOP_)COUNT
- The value of the lander clock (in seconds) when the data sample
was completes. In specific cases in the MET surface data, this value
is calculated.
-
START_BYTE
- The location in a data record of the first byte of the object
(usually a COLUMN object), counting from 1.
-
START_TIME
- The UTC time corresponding to SPACECRAFT_CLOCK_START_COUNT.
-
STOP_TIME
- The UTC time corresponding to SPACECRAFT_CLOCK_STOP_COUNT.
-
^TABLE
- A pointer to the first record of the data within a PDS table file.
-
temperature
- Atmospheric temperature, measured in degrees Kelvin.
-
top_mast_thermocouple
- The atmospheric temperature recorded by the top mast thermocouple
(the thermocouple located 103.8 cm above the plane of the lander
petal). The calibrated values are reported in units of degrees
Kelvin.
-
top_mast_therm_std_dev_diff
- In cases where the top_mast_thermocouple value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
80 counts, which corresponds to 0.5 K. Large fluctuations are
expected.
-
UNIT
- The full name or standard abbreviation of a unit of measurement in
which a value is expressed. Example values: square meter, meter per
second.
-
wind_sensor_current
- Current derived from the voltage across select resistors that
define wind sensor current. This voltage should be constant if the
constant current source is is working correctly. Calibrated values
are shown in amps.
-
wind_sensor_current_std_dev_diff
- In cases where the wind_sensor_current value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is 2
counts, which corresponds to a value of 0.08 mA at high power, and
0.03 mA at low power.
-
WIND_SENSOR_HIGH_POWER_DUR(ATION)
- The elapsed time, in seconds, for the wind sensor to be in high
power mode before switching to low power mode. High power mode is
necessary for meaningful wind measurements. This parameter is used
only if Wind Sensor Power Mode specifies cyclic operation. Maximum
value is 8,192 seconds, or 2.27 hours. The power switching times are
with respect to the start of data-taking and may be slightly delayed
due to other spacecraft activities. This potential delay is not
cumulative. An inconsistency is indicated if the Wind Sensor High
Power Duration is less than the Sampling Interval.
-
WIND_SENSOR_LOW_POWER_DUR(ATION)
- The elapsed time, in seconds, for the wind sensor to be in low
power mode before switching to high power mode. This parameter is
used only if Wind Sensor Power Mode specifies cyclic operation.
Maximum value is 8,192 seconds, or 2.27 hours. The power switching
times are with respect to the start of data-taking and may be slightly
delayed due to other spacecraft activities. This potential delay is
not cumulative. An inconsistency is indicated if the Wind Sensor Low
Power Duration is less than the Sampling Interval.
-
WIND_SENSOR_POWER(_TYPE)
- The operating power mode of the wind sensor. The three valid
values are: 0: Low power throughout session, 1: High power throughout
session, 2: Cyclic low and high power alternating throughout session,
starting with low power. Where value only applies to an individual
sample, 0 means that the wind sensor was in low power mode when the
sample was taken, and 1 means that it was in high power mode.
*above can be either digital or string*
-
wind_sensor_segment_1
- The temperature of segment number one of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_1_std_dev_diff
- In cases where the wind_sensor_segment_1 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_segment_2
- The temperature of segment number two of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_2_std_dev_diff
- In cases where the wind_sensor_segment_2 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_segment_3
- The temperature of segment number three of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_3_std_dev_diff
- In cases where the wind_sensor_segment_3 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_segment_4
- The temperature of segment number four of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_4_std_dev_diff
- In cases where the wind_sensor_segment_4 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_segment_5
- The temperature of segment number five of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_5_std_dev_diff
- In cases where the wind_sensor_segment_5 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_segment_6
- The temperature of segment number six of the wind sensor, located
at the top of the MET mast. Calibrated values are in units of degrees
Kelvin.
-
wind_sensor_seg_6_std_dev_diff
- In cases where the wind_sensor_segment_6 value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
11 counts, which corresponds to a value of 0.5 K at high power, and
1.2 K at low power. Large fluctuations are expected.
-
wind_sensor_thermocouple
- This is the temperature of the body of the wind sensor cylinder, as
determined by the thermocouple located inside the cylinder; the
cold-junction for this thermocouple is PRT4. Calibrated values are
shown in degrees Kelvin.
-
wind_sensor_thermocouple_std_dev_diff
- In cases where the wind_sensor_thermocouple value is an average of
multiple values, this keyword provides a sense of the degree of
scatter of the values. The value can be any of the following:
| Value | Meaning |
|---|
| 0 | SD < 2 sigma |
| 1 | 2 sigma < SD < 4 sigma |
| 2 | 4 sigma < SD < 8 sigma |
| 3 | SD > 8 sigma |
where SD is the standard deviation of the measurement and 1 sigma is a
predetermined reference value. In this case, the reference value is
80 counts, which corresponds to 0.5 K. Large fluctuations are
expected.
-
x_axis_accelerometer_gain
- The gain range of the engineering (or science, depending on
context) X-axis accelerometer in units of gravity. (Valid values:
0.016, 0.800, 40.000)
-
y_axis_accelerometer_gain
- The gain range of the science Y-axis accelerometer in units of
gravity. (Valid values: 0.016, 0.800, 40.000)
-
z_axis_accelerometer_gain
- The gain range of the science Z-axis accelerometer in units of
gravity. (Valid values: 0.016, 0.800, 40.000)