This dictionary contains high level classes and
attributes used in imaging and spectrometer products. It also
contains classes with attributes used during active mission
operations. Many of these classes are designed to be extended into
local mission dictionaries.
The Command_Parameters class contains attributes
used to identify or describe the commands sent to a spacecraft to
perform one or more actions resulting in the acquisition of the
current data product.
The Device_Temperature class provides the
temperature of some point on an instrumnet or other
device.
The Filter class describes the filter associated
with a particular observation. The filter may be identified by
name, identifier, number or some combination of
these.
The Imaging_Instrument_Parameters class contains
attributes providing the values of any dynamic physical or
operating characteristics of an instrument.
The Packet_Parameters class contains parameters
describing the packetized telemetry data.
The Process class describes an action taken upon a
product, typically by a software program.
The Process_Owner class describes the individual
and/or organization that made changes to a
product.
The Processing_History class provides a listing of
the programs used to create the current product.
The Software class identifies the software program
used to make changes to a product.
The Telemetry_Parameters class contains
downlink-related attributes used primarily during mission
operations.
The center_filter_wavelength attribute provides the
mid_point wavelength value between the minimum and maximum
instrument filter wavelength values.
The command_sequence_number attribute provides a
numeric identifier for a sequence of commands sent to a spacecraft
or instrument.
The crosstrack_summing attribute provides the
number of detector pixel values in the crosstrack direction that
have been averaged to produce the final output
pixel.
The downlink_telemetry_protocol_type attribute
specifies the protocol used by the source of a telemetry stream for
creating telemetry data products.
The downtrack_summing attribute provides the number
of detector pixel values in the downtrack direction that have been
averaged to produce the final output pixel.
The earth_received_start_date_time attribute
provides the earliest time at which any component telemetry data
for a particular product was received.
The earth_received_stop_date_time attribute
provides the latest time at which any component telemetry data for
a particular product was received.
The expected_packets attribute provides the total
number of telemetry packets which constitute a complete data
product, i.e., a data product without missing
data.
The exposure count attribute provides the maximum
number of exposures taken during a specified interval. The value
is dependent on exposure type.
The exposure_duration attribute provides the value
of the time interval between the opening and closing of an
instrument aperture (such as a camera shutter).
The exposure_type attribute indicates the exposure
setting on a camera.
The filter_id attribute provides the number of an
instrument filter through which an image or measurement was
acquired or which is associated with a given instrument
mode.
The filter_name attribute provides the
commonly-used name of the instrument filter through which an image
or measurement was acquired or which is associated with a given
instrument mode.
The filter_number attribute provides the numeric
identifier of an instrument filter through which an image or
measurement was acquired or which is associated with a given
instrument mode. Within the bin class of a spectral data object,
it identifies the filter through which data in the given band were
acquired.
The first_line attribute indicates the line within
a source image that corresponds to the first line in a
sub-image.
The first_line_sample attribute indicates the
sample within a source image that corresponds to the first sample
in a sub-image.
The full_width_half_maximum attribute describes the
width of a "bump" on a curve or function. It is given by the
distance between points on the curve at which the function reaches
half of its maximum value.
The gain_mode_id attribute identifies the gain
state of an instrument. Gain is a constant value which is
multiplied with an instrument's output signal to increase or
decrease the level of that output.
The name of a computer on which a process was
run.
The light_flood_state_flag attribute indicates the
mode (on or off) of light flooding for an
instrument.
The missing_packet_flag attribute indicates whether
or not there were telemetry packets that were expected but not
received.
The offset_mode_id attribute identifies the analog
value that is subtracted from the video signal prior to the
analog/digital converters.
The packet_creation_date_time attribute specifies
the time, in standard UTC format, that data was packetized on board
a spacecraft. This value is not always co-incident with the data
acquisition time.
The packet_creation_sclk attribute specifies the
value of the spacecraft clock at the time that data was packetized
on board a spacecraft. This value is not always co-incident with
the data acquisition time.
The packet_map_mask attribute is a binary or
hexadecimal number identifying which of a data file's expected
packets were actually received. The digits correspond positionally
with the relative packet numbers of the data file. The bits are to
be read left to right; i.e., the first (left-most) digit of the
number corresponds to the first packet of the data file. A bit
value of 1 indicates that the packet was received; a value of 0
indicates that it was not received.
The producer_full_name attribute provides the
complete name for a person and includes titles and
suffixes.
The producer_id attribute provides a short name or
acronym identifying the organization or team which produced a
product. Ex. "LRO_LROC_TEAM", "MIPL of JPL"
The producer_institution_name attribute identifies
a university, research center, national space agency, or other
institution associated with the production of a PDS archive. This
is generally an institution associated with the Producer_Name. Ex.
"Max Planck Institute", "NASA/Goddard Space Flight
Center"
The received_packets attribute provides the total
number of telemetry packets which constitute a reconstructed data
product, cf. expected_packets.
The telemetry_application_id attribute identifies
the process, or source, which created the data. This can include
information such as an identification of the instrument which
generated the telemetry stream, its operating mode at the time of
data acquisition, and any onboard compression of the
data.
The telemetry_application_name attribute provides
the name associated with the source or process which created the
data.
The telemetry_application_subtype_id attribute
provides further distinction (i.e., greater specificity) among
telemetry_application_id types.
The telemetry_provider_id attribute identifies the
organization or subsystem that supplied the telemetry data product
to the producer of the raw (EDR) PDS data product. This is
typically (but not always) the organization responsible for
reassembling packetized data into a single
product.
The temperature_calibrated attribute provides the
temperature, in the specified units, of some point on an instrument
or other device.
The temperature_raw attribute provides the raw,
uncalibrated, temperature of some point on an instrument or other
device.
A short identifier used to run a computer
process.
The version_id attribute provides the version of
the software program.
The comment attribute provides one or more remarks
or thoughts relevant to the object.
The description attribute provides a statement,
picture in words, or account that describes or is otherwise
relevant to the object.
The name attribute provides a word or combination
of words by which the object is known.