The Mars 2020 mission dictionary contains classes and attributes specific to the Mars 2020 (Perseverance Rover) mission and its instruments. Mars 2020 version 1.0.1.0 PDS Build 1.16.0.0 LDDTool version 13.0.2 Built with LDDTool -plJ PDS4_IMG_Ingest_LDD.xml PDS4_MARS2020_IngestLDD.xml 2020-07-29 Confirmed spacecraft clock count notation (Bob Deen) 2020-08-11 Revised some attribute names to be consistent with msn discipline dictionary, for efficient searches: product_type_name replaces product_type release_number replaces release_id (but it is still an ASCII string) spacecraft_clock_start replaces spacecraft_clock_start_count spacecraft_clock_stop replaces spacecraft_clock_stop_count spacecraft_clock_partition replaces spacecraft_clock_count_partition start_local_true_solar_time_sol and stop_local_true_solar_time_sol replace local_true_solar_time_sol 2020-08-19 Removed enumerated values list for product_type_name, until we know what values to use, if any 2020-08-20 Changed mars2020:error:sclk_rule_0 to allow spacecraft_clock_start and stop to be evaluated independently 2020-08-25 Added container class Mars2020_Parameters 2020-08-28 Added classes PIXL_Illumination and SuperCam_RMI_Mini_Header and their attributes, from Bob Deen 2020-10-21 Built with IM 1.15.0.0. Added RIMFAX_Parameters classes and attributes. 2020-10-28 Made a few adjustments for RIMFAX (removed second delay parameters and removed number in the name of the remaining delay parameters). Moved position of rfax_setup_file to match its location in the ODL labels. Added attribute active_flight_computer to Observation_Information class. 2020-12-29 Changed max occurrences of PIXL_Illumination class from 1 to 2. Corrected pattern for rules mars2020:error:ltst_rule_0 and mars2020:error:ltst_rule_1. 2020-12-30 Add MOXIE_Parameters classes and attributes 2021-01-20 Added SHERLOC Calibration_Target class 2021-01-22 Added more PIXL_Parameters classes and attributes 2021-01-26 Made PIXL attributes both nillable and optional 2021-03-10 Changed attribute mars2020:unit to optional in MOXIE classes Run_Control_Table_Field, Algorithm_Parameter_Table_Field, Safety_Parameter_Table_Field, and Run_Parameter_Table_Field. Added start_mars_year and stop_mars_year to mars2020:Observation_Information to support MOXIE. Changed MOXIE attribute names *_enable to *_en. 2021-03-30 Changed spacecraft_clock_start and spacecraft_clock_stop to allow a fraction up to 9 digits (was 6) 2021-04-07 Added classes SuperCam_Generic_Packet_Header, SuperCam_Ancillary_Header, and their attributes 2021-04-27 Added pixl_rtt to class PIXL_Parameters. Added enumerated value definitions for attribute SuperCam_Parameters/SuperCam_Ancillary_Header/scam_type. 2021-05-06 Added Digital_Number_to_Calibrated_Unit_Conversions class, subclasses, and attributes to MOXIE_Parameters. Added file_name_binary attribute to MOXIE_Parameters subclasses. Revised definitions of some MOXIE subclasses. 2021-05-25 Changed the class MOXIE_Parameters/.../Digital_Number_To_Calibrated_Unit_Conversions and its subclasses from required to optional. They should appear only for calibrated products, but the MOXIE team will do that check. Corrected error in the definitions of MOXIE_Parameters/.../Ancillary_Data_*/Internal_Reference/. 2021-06-08 Changed attribute Mars2020_Parameters/Observation_Information/release_number minimum_occurrences from 1 to 0. 2021-07-15 Added attributes start/stop_utc, start/stop_jdate, start/stop_sounding_counter, min/max rover_lat, min/max_rover_lon, and min/max_rover_elev to RIMFAX_Parameters class. Changed RIMFAX_Parameters/config_id maximum_occurrences from 1 to *. Added missing definitions for RIMFAX_Parameters decimation, sinetable, and time_cut_samples. Commented out time_cut_samples because it is not used in any class. Changed sinetable data type from ASCII_Integer to ASCII_Short_String_Collapsed. Built for IM 1G00 (1.16.0.0). 2021-07-23 Changed definitions of MOXIE_Parameters/.../Ancillary_Data_*/ classes back to using DD_Association instead of DD_Associate_External_Class due to a bug in LDDTool. Corrected rule_context in rules for validating MOXIE_Parameters/.../Ancillary_Data_*/Internal_Reference/. Changed minimum_occurrences from 1 to 0 for all MOXIE_Parameters/.../Algorithm_Parameter_Table calibrated attributes. 2021-08-13 Added attribute number_of_soundings to RIMFAX_Parameters class. 2022-05-25 Version 1.0.1.0. Added values for SuperCam_Parameters/SuperCam_Ancillary_Header/scam_type. MOXIE Algorithm Parameter Table MOXIE Algorithm Parameter Table Field MOXIE Algorithm Parameter Table Fields MOXIE Algorithm Parameter Table Metadata MOXIE Algorithm Parameter Table Values References to ancillary data acquired by other instruments and/or the rover References to ancillary data acquired by the EDLCam instrument microphone References to ancillary data acquired by the MEDA instrument References to ancillary data acquired by the rover References to ancillary data acquired by the Supercam instrument microphone The Calibration_Target class contains information about the target of a calibration measurement. The Device_Current class provides the current of some point on an imaging instrument or other imaging device. The Device_Currents class provides a container for the set of currents of an imaging instrument or other imaging device. The Device_Flash class provides the duration of a single identified component of the flash for the PIXL MCC illumination. The Device_Flashes class provides a container for the set of flash durations for the PIXL MCC illumination. The Device_Temperature class provides a container for the temperature of some point on an imaging instrument or other imaging device. The Device_Temperatures class provides a container for the set of temperatures of an imaging instrument or other imaging device. The Device_Voltage class provides the voltage of some point on an imaging instrument or other imaging device. The Device_Voltage class provides a container for the set of voltages of an imaging instrument or other imaging device. Digital number to calibrated unit constant Digital number to calibrated unit conversions Digital number to calibrated unit conversions metadata Digital number to calibrated unit equation Digital number to calibrated unit equations MOXIE Experiment Configuration MOXIE Experiment Configuration Metadata The MOXIE_Parameters class provides metadata specific to MOXIE observations. The Mars2020_Parameters class is a superclass containing all Mars2020 mission classes. The Observation_Information class provides information about a science observation. The PIXL Compression class provides information about the compression applied to the data product. Container class containing information related to the illumination devices on PIXL. There are two, flood light and structured light. Note that some of the illumination is in the img:Illumination class; the information here is instrument-specific information that does not fit into the img: framework. The PIXL Parameters class provides metadata specific to PIXL observations. Container for the attributes describing a RIMFAX observation MOXIE Run Control Table MOXIE Run Control Table field MOXIE Run Control Table Fields MOXIE Run Control Table metadata MOXIE Run Control Table step MOXIE Run Control Table Values MOXIE Run Parameter Table MOXIE Run Parameter Table Field MOXIE Run Parameter Table Fields MOXIE Run Parameter Table Metadata MOXIE Run Parameter Table Values Container for the attributes describing a SHERLOC observation MOXIE Safety Parameter Table MOXIE Safety Parameter Table Field MOXIE Safety Parameter Table Fields MOXIE Safety Parameter Table Metadata MOXIE Safety Parameter Table Values The SuperCam_Ancillary_Header class provides ancillary metadata specific to SuperCam observations. The SuperCam Generic_Packet_Header class provides metadata from the SuperCam product generic packet header. The SuperCam_Parameters class provides metadata specific to SuperCam observations. This class contains the "mini-header" for the SuperCam RMI camera on Mars 2020. The mini- header is a set of information that is tightly tied to the camera hardware, and the instrument team finds value in keeping the set of mini- header information together. Much (but not all) of the information is also included in appropriate sections of the discipline dictionaries, which is where general users should go. This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the common namespace. The active_flight_computer indicates which flight computer "string" (separate sets of electronics) was active when a product was acquired. For Mars 2020 there are two redundant flight computers called "strings", also known as Rover Compute Elements (RCEs). Either string, A or B, may be active at any given time. Hardware identifier for a specific BU CNDH board. Used to know which SOH engineering unit conversion factors to apply to the data. Unique identifier for the software version. Is a unix timestamp of when the software was built. True if the radar is connected to the calibration cable, false if it is connected to the antenna cable. The calibration_target_name gives the name of the calibration target as defined in the SHERLOC instrument paper, Bhartia et al., SSR, 2020. Each calibration target name is associated with a calibration target number: (0) NA (1) AlGaN on Sapphire 264 nm (2) Diffusil Diffuser (3) Mars Meteorite SAU 008 (4) Intensity Target (5) AlGaN on Sapphire 340 nm (6) Polycarbonate/opal glass (7) Vectran (8) Orthofabric (9) Teflon (10) nGimat Coated Teflon The calibration_target_name gives the number of the calibration target as defined in the SHERLOC instrument paper, Bhartia et al., SSR, 2020. Each calibration target number is associated with a calibration target name: (0) Not Applicable (1) AlGaN on Sapphire 264 nm (2) Diffusil Diffuser (3) Mars Meteorite SAU 008 (4) Intensity Target (5) AlGaN on Sapphire 340 nm (6) Polycarbonate/opal glass) (7) Vectran (8) Orthofabric (9) Teflon (10) nGimat Coated Teflon For MOXIE: Gas composition sensors CS1, CS2 and CS3 upper current limit in calibrated units For MOXIE: Gas composition sensors CS1, CS2 and CS3 upper current limit in digital numbers For MOXIE: Gas composition sensors CS1, CS2 and CS3 current limit persistence time For MOXIE: Gas composition sensor CS4 upper current limit in calibrated units For MOXIE: Gas composition sensor CS4 upper current limit in digital numbers For MOXIE: Gas composition sensor CS4 current limit persistence time Unique identifier for the CNDH firmware version. Is a unix timestamp of when the firmware was built. Comments associated with MOXIE_Parameters/Run_Control_Table_Step or with MOXIE_Parameters/.../Digital_Number_To_Calibrated_Unit_Equations. Identifier of current RIMFAX configuration mode For MOXIE: Gas composition sensors 1, 2 and 3 enable bit For MOXIE: Gas composition sensor 4 enable bit The current_value attribute provides provides the current, in the specified units, of an imaging instrument or some part of the imaging instrument. Version number of the instrument command dictionary, which defines specifics of each command parameter, and the structure of individual data products like SOH. Specifies the size of the image (in the telemetry stream) in bytes for SuperCam RMI. Onboard decimation of acquired soundings, in number of soundings removed per each sounding downlinked. The device_name attribute supplies the formal name for an imaging instrument, an imaging instrument device, or some point on the instrument or device. Version number of the software used to convert digital numbers to calibrated units Digital number to calibrated unit equation For MOXIE: Name of a MOXIE_Parameters experiment configuration Name of the Run Parameter Table binary file, as uplinked to the rover Name of the calibration table file containing the digital number to calibrated unit conversions Name of the file containing the mapping from parameters to digital number to calibrated unit conversions, for parameters not in telemetry For MOXIE: Name of a MOXIE_Parameters table comma-separated value file containing the experiment intent, after conversion into digital numbers For MOXIE: Name of a MOXIE_Parameters table comma-separated value file containing the experiment intent Name of the file containing the mapping from parameters to digital number to calibrated unit conversions, for parameters in extended telemetry Name of the file containing the mapping from parameters to digital number to calibrated unit conversions, for parameters in standard telemetry For MOXIE: Stem of the file names used when creating the experiment configuration The flash_duration attribute provides the duration of a single component of the flash for the PIXL MCC illumination. Frequency of the gate signal The number of bytes of the entire generic buffer. Includes commands, data, header, and trailer, every byte from the packet header marker through the Fletcher checksum. Distance between sounding groups (i.e. distance between soundings of a given mode) as set in activity uplink (actual distance may deviate slightly); 0 if not a Traverse sounding For MOXIE: SOXE bottom half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE bottom half-stack power supply is on in calibrated units For MOXIE: SOXE bottom half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE bottom half-stack power supply is on in digital numbers For MOXIE: SOXE bottom half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE bottom half-stack power supply is off in calibrated units For MOXIE: SOXE bottom half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE bottom half-stack power supply is off in digital numbers For MOXIE: SOXE heater enable bit For MOXIE: SOXE top half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE top half-stack power supply is on in calibrated units For MOXIE: SOXE top half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE top half-stack power supply is on in digital numbers For MOXIE: SOXE top half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE top half-stack power supply is off in calibrated units For MOXIE: SOXE top half-stack heater temperature control loop heater PWM duty cycle upper limit when SOXE top half-stack power supply is off in digital numbers The inst_compression_mode identifies the type of compression applied to a data product. The inst_compression_name gives the name of the compression algorithm applied to a data product. The number of soundings in a Long Integration Sounding (LIS) observation. For MOXIE: Scroll compressor motor enable bit For MOXIE: Major version number of the experiment configuration Static value used by the SuperCam RMI Body Unit (BU). The maximum value of rover_elev, the planetary elevation of the rover RNAV frame origin The maximum value of rover_lat, the planetocentric latitude of the rover RNAV frame origin The maximum value of rover_lon, the east longitude of the rover RNAV frame For SuperCam RMI this specifies the Mast Unit (MU) memory bank used to hold image before transfer to RCE. There are 64 memory banks in the MU. Millisecond count from RCE time sync when image received from mast unit by SuperCam RMI. The minimum value of rover_elev, the planetary elevation of the rover RNAV frame origin The minimum value of rover_lat, the planetocentric latitude of the rover RNAV frame origin The minimum value of rover_lon, the east longitude of the rover RNAV frame For MOXIE: Minor version number of the experiment configuration The mission_phase_name identifies a time period within the mission. Hardware identifier for a specific MU board. Used to know which housekeeping engineering unit conversion factors to apply to the data. Version of the MU, response from the MU send version command. This note field can be used to indicate that the attenuation values are in dB because there is no unit_of_measure for such units. For SuperCam RMI, this is the number of images transmitted to the RCE. Number of samples in each sounding. Number of command or data sections contained in this buffer. Does not include the header section or the trailer section. Number of radar soundings in a RIMFAX data product. Number of sweeps that are integrated internally in the radar. Non-volatile count of the number of times the generic buffer has been transmitted to the RCE. Acts as a unique identifier for the buffer. For MOXIE: SOXE cathode pressure upper operational limit in calibrated units For MOXIE: SOXE cathode pressure upper operational limit in digital numbers For MOXIE: SOXE cathode pressure lower operational limit in calibrated units For MOXIE: SOXE cathode pressure lower operational limit in digital numbers For MOXIE: SOXE cathode pressure operational limit persistence time For MOXIE: SOXE bottom half-stack temperature upper operational limit in calibrated units For MOXIE: SOXE bottom half-stack temperature upper operational limit in digital numbers For MOXIE: SOXE bottom half-stack temperature lower operational limit in calibrated units For MOXIE: SOXE bottom half-stack temperature lower operational limit in digital numbers For MOXIE: SOXE bottom half-stack temperature operational limit persistence time For MOXIE: SOXE top half-stack temperature upper operational limit in calibrated units For MOXIE: SOXE top half-stack temperature upper operational limit in digital numbers For MOXIE: SOXE top half-stack temperature lower operational limit in calibrated units For MOXIE: SOXE top half-stack temperature lower operational limit in digital numbers For MOXIE: SOXE top half-stack temperature operational limit persistence time For MOXIE: Ratio of SOXE bottom half-stack current to SOXE cathode pressure upper operational limit in calibrated units For MOXIE: Ratio of SOXE bottom half-stack current to SOXE cathode pressure upper operational limit in digital numbers For MOXIE: Ratio of SOXE bottom half-stack current to SOXE cathode pressure lower operational limit in calibrated units For MOXIE: Ratio of SOXE bottom half-stack current to SOXE cathode pressure lower operational limit in digital numbers For MOXIE: Ratio of SOXE bottom half-stack current to SOXE cathode pressure operational limit persistence time For MOXIE: Ratio of SOXE top half-stack current to SOXE cathode pressure upper operational limit in calibrated units For MOXIE: Ratio of SOXE top half-stack current to SOXE cathode pressure upper operational limit in digital numbers For MOXIE: Ratio of SOXE top half-stack current to SOXE cathode pressure lower operational limit in calibrated units For MOXIE: Ratio of SOXE top half-stack current to SOXE cathode pressure lower operational limit in digital numbers For MOXIE: Ratio of SOXE top half-stack current to SOXE cathode pressure operational limit persistence time Name of the field to which the digital number to calibrated unit equation applies The pdp_category identifies the PIXL data product category number. The pdp_category_name identifies the PIXL data product category name. The pdp_nvm_block identifies the Non Volatile Memory block from which Anomalous Retrieved data was read. Applies only to anomalous data. The pdp_nvm_chunks gives the number of Non Volatile Memory chunks that make up a PIXL data product. The pdp_nvm_page identifies the page in Non Volatile Memory from which Anomalous Retrieved Data was read. Applies only to anomalous data. The pdp_nvm_usn gives the Universal Sequence Number of the data product as it was stored in Non-Volatile Memory. The pdp_size gives the size of the PIXL data product as it was stored in Non-Volatile Memory. For MOXIE: MOXIE_Parameters persistence time enable flag The PIXL Motion Counter is a counter representing a change to the PIXL Hexapod position. The counter starts at 0 when PIXL is powered on (presumably with the hexapod in the "homed" position) and increases by 1 each time the hexapod is moved. The pixl_rtt attribute is the PIXL-specific 9-character Round-Trip Tracking code. A specific pixl_rtt value is assigned to all products collected during the same PIXL observation set. The pixl_rtt value also appears in characters 36-44 of the PIXL data file name. The code is typically a string of digits with leading zeroes. For MOXIE: Primary objective of the experiment configuration The product_type_name identifies a group of data products within a collection that have some property in common, such as processing level, resolution, or instrument-specific setting. Last time sync value received from RCE by SuperCam RMI True if the radar is in passive mode, false if it is in active (normal radar) mode. release_number is the identifier of a scheduled release of Mars 2020 data from PDS. The first Mars 2020 data release has release_number "01". The release_number for a given product is always the first release in which it appears, and does not change if the product is revised later. Reserved field for SuperCam RMI mini-header Reserved field for SuperCam RMI mini-header Dump of SuperCam RMI hardware registers Dump of all SuperCam RMI FPGA registers For SuperCam RMI this is the total number of bytes in MU and BU headers For MOXIE: Unique identifier for the experiment configuration Attenuation in the receive path; higher values represent more dampening of the received signal Time delay of receiver gate Logical to indicate if LIBS active are statistics Indicates whether darks were collected after LIBS active, before LIBS active, or both Logical to indicate if LIBS dark are statistics Point number in the raster Logical to indicate if Raman active are statistics Indicates whether darks were collected after Raman active, before Raman active, or both Logical to indicate if Raman darks are statistics Flag indicating a 2D collect Bit mask indicating technique type Unique identifier for the SE firmware version. Is a unix timestamp of when the firmware was built. Hardware identifier for a specific SE board. Used to know which SOH engineering unit conversion factors to apply to the data. For MOXIE: Secondary objective of the experiment configuration Name of the setup file. The sherloc_config_file provides the name of the configuration file used to process a SHERLOC data product. Sine table used to create the radar bandwidth sweep. For MOXIE: SOXE bottom half-stack current upper safety limit in calibrated units For MOXIE: SOXE bottom half-stack current upper safety limit in digital numbers For MOXIE: SOXE bottom half-stack current safety limit persistence time For MOXIE: SOXE top half-stack current upper safety limit in calibrated units For MOXIE: SOXE top half-stack current upper safety limit in digital numbers For MOXIE: SOXE top half-stack current safety limit persistence time For MOXIE: Pressure between check valve and flow sensor upper safety limit in calibrated units For MOXIE: Pressure between check valve and flow sensor upper safety limit in digital numbers For MOXIE: Pressure between check valve and flow sensor safety limit persistence time For MOXIE: Pressure between flow sensor and SOXE upper safety limit in calibrated units For MOXIE: Pressure between flow sensor and SOXE upper safety limit in digital numbers For MOXIE: Pressure between flow sensor and SOXE safety limit persistence time For MOXIE: Pressure at CO/CO2 VFCD inlet (SOXE cathode pressure) upper safety limit in calibrated units For MOXIE: Pressure at CO/CO2 VFCD inlet (SOXE cathode pressure) upper safety limit in digital numbers For MOXIE: Pressure at CO/CO2 VFCD inlet (SOXE cathode pressure) safety limit persistence time For MOXIE: Pressure at O2 VFCD inlet (SOXE anode pressure) upper safety limit in calibrated units For MOXIE: Pressure at O2 VFCD inlet (SOXE anode pressure) upper safety limit in digital numbers For MOXIE: Pressure at O2 VFCD inlet (SOXE anode pressure) safety limit persistence time For MOXIE: Temperature at sensor panel upper safety limit in calibrated units For MOXIE: Temperature at sensor panel upper safety limit in digital numbers For MOXIE: Temperature at sensor panel safety limit persistence time For MOXIE: Temperature at electronics control board upper safety limit in calibrated units For MOXIE: Temperature at electronics control board upper safety limit in digital numbers For MOXIE: Temperature at electronics control board safety limit persistence time For MOXIE: Temperature at compressor housing upper safety limit in calibrated units For MOXIE: Temperature at compressor housing upper safety limit in digital numbers For MOXIE: Temperature at compressor housing safety limit persistence time For MOXIE: Temperature at compressor motor upper safety limit in calibrated units For MOXIE: Temperature at compressor motor upper safety limit in digital numbers For MOXIE: Temperature at compressor motor safety limit persistence time For MOXIE: Temperature at baseplate upper safety limit in calibrated units For MOXIE: Temperature at baseplate upper safety limit in digital numbers For MOXIE: Temperature at baseplate lower safety limit in calibrated units For MOXIE: Temperature at baseplate lower safety limit in digital numbers For MOXIE: Temperature at baseplate safety limit persistence time For MOXIE: SOXE bottom half-stack temperature upper safety limit in calibrated units For MOXIE: SOXE bottom half-stack temperature upper safety limit in digital numbers For MOXIE: SOXE bottom half-stack temperature safety limit persistence time For MOXIE: SOXE top half-stack temperature upper safety limit in calibrated units For MOXIE: SOXE top half-stack temperature upper safety limit in digital numbers For MOXIE: SOXE top half-stack temperature safety limit persistence time For MOXIE: Main 28 V power supply upper voltage safety limit in calibrated units For MOXIE: Main 28 V power supply upper voltage safety limit in digital numbers For MOXIE: Main 28 V power supply lower voltage safety limit in calibrated units For MOXIE: Main 28 V power supply lower voltage safety limit in digital numbers For MOXIE: Main 28 V power supply voltage safety limit persistence time For MOXIE: SOXE heaters 28 V power supply upper voltage safety limit in calibrated units For MOXIE: SOXE heaters 28 V power supply upper voltage safety limit in digital numbers For MOXIE: SOXE heaters 28 V power supply lower voltage safety limit in calibrated units For MOXIE: SOXE heaters 28 V power supply lower voltage safety limit in digital numbers For MOXIE: SOXE heaters 28 V power supply voltage safety limit persistence time For MOXIE: SOXE bottom half-stack voltage upper safety limit in calibrated units For MOXIE: SOXE bottom half-stack voltage upper safety limit in digital numbers For MOXIE: SOXE bottom half-stack voltage safety limit persistence time For MOXIE: SOXE top half-stack voltage upper safety limit in calibrated units For MOXIE: SOXE top half-stack voltage upper safety limit in digital numbers For MOXIE: SOXE top half-stack voltage safety limit persistence time Sol_number is the number of the Mars day on which an observation was acquired. Landing day is Sol 0. The spacecraft_clock_partition provides the clock partition active for the spacecraft_clock_start and spacecraft_clock_stop attributes. This attribute may be used when the spacecraft_clock values do not include a partition number. The spacecraft_clock_start is the value of the spacecraft clock at the beginning of an observation, in seconds. Values are formed according to the pattern [p/]dddddddddd[.fffffffff], where p is an optional partition number, dddddddddd is a whole number of seconds up to 10 digits, and .fffffffff is an optional fraction of a second up to 9 digits. The whole number and fraction are separated by a period. If a partition number and slash are not present, then the attribute spacecraft_clock_partition must be used. The spacecraft_clock_stop is the value of the spacecraft clock at the end of an observation, in seconds. Values are formed according to the pattern [p/]dddddddddd[.fffffffff], where p is an optional partition number, dddddddddd is a whole number of seconds up to 10 digits, and .fffffffff is an optional fraction of a second up to 9 digits. The whole number and fraction are separated by a period. If a partition number and slash are not present, then the attribute spacecraft_clock_partition must be used. Start frequency of recorded bandwidth range (same as stop_frequency for single-frequency Passive Meas) Start time in Julian date of first activity in the data product Start_local_mean_solar_time is the local mean solar time, as defined in the main PDS4 data dictionary, at the beginning of an observation. Start_local_true_solar_time is the local true solar time, as defined in the main PDS4 data dictionary, at the beginning of an observation. The start_local_true_solar_time_sol element specifies the number of solar days elapsed since a reference day (e.g. the day on which a landing vehicle set down) for local true solar time (LTST). Days are measured in rotations of the planet in question from midnight to midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value will be less than or equal to '0' and can be negative. Start_local_true_solar_time_sol should accompany the attribute start_local_true_solar_time if that attribute's value does not include a sol number prefix. The start_mars_year element gives the Mars year at the beginning of the observation. Mars Year 1 began on April 11, 1955. The year number is incremented by 1 for each Martian spring equinox (solar longitude 0 degrees). Start_sol_number is the number of the Mars day on which a multiple-day observation was begun. Landing day is Sol 0. Start_solar_longitude is the solar longitude, as defined in the main PDS4 data dictionary, at the beginning of an observation. Start value of sounding counter of first activity in the data product. The sounding counter records absolute total count of soundings since start of M2020 mission. Start time in UTC of first activity in the data product For MOXIE: Step duration For MOXIE: Step number Stop frequency of recorded bandwidth range (same as start_frequency for single-frequency Passive Meas) Stop time in Julian date of last activity in the data product. Stop_local_mean_solar_time is the local mean solar time, as defined in the main PDS4 data dictionary, at the end of an observation. Stop_local_true_solar_time is the local true solar time, as defined in the main PDS4 data dictionary, at the end of an observation. The stop_local_true_solar_time_sol element specifies the number of solar days elapsed since a reference day (e.g. the day on which a landing vehicle set down) for local true solar time (LTST). Days are measured in rotations of the planet in question from midnight to midnight. The reference day is '0', as Landing day is Sol 0. If before Landing day, then value will be less than or equal to '0' and can be negative. Stop_local_true_solar_time_sol should accompany the attribute stop_local_true_solar_time if that attribute's value does not include a sol number prefix. The stop_mars_year element gives the Mars year at the end of the observation. Mars Year 1 began on April 11, 1955. The year number is incremented by 1 for each Martian spring equinox (solar longitude 0 degrees). Stop_sol_number is the number of the Mars day on which a multiple-day observation was ended. Landing day is Sol 0. Stop_solar_longitude is the solar longitude, as defined in the main PDS4 data dictionary, at the end of an observation. Stop value of sounding counter of last activity in the data product. The sounding counter records absolute total count of soundings since start of M2020 mission. Stop time in UTC of last activity in the data product Duration of radar-signal generation sweep through frequency bandwidth, for Active Meas; Duration of receive-only sweep through frequency bandwidth, for Passive Meas Symbol of the constant in the digital number to calibrated unit equation The temperature_value attribute provides the temperature, in the specified units, of some point on an imaging instrument or other imaging instrument device. For MOXIE: Gas composition sensors CS1, CS2, CS3 and CS4 upper temperature limit in calibrated units For MOXIE: Gas composition sensors CS1, CS2, CS3 and CS4 upper temperature limit in digital numbers For MOXIE: Gas composition sensors CS1, CS2, CS3 and CS4 temperature limit persistence time Attenuation in the transmit path, higher values represent lower output power Time delay of transmitter gate Numerical value of the constant in the digital number to calibrated unit equation For MOXIE: SOXE bottom half-stack power supply enable bit The voltage_value attribute provides provides the voltage, in the specified units, of an imaging instrument or some part of the imaging instrument. For MOXIE: SOXE top half-stack power supply enable bit The data_id parameter sent with the XMIT_DATA command For MOXIE: SOXE bottom half-stack current control loop voltage output upper limit in calibrated units For MOXIE: SOXE bottom half-stack current control loop voltage output upper limit in digital numbers For MOXIE: SOXE bottom half-stack current control loop integral gain in calibrated units For MOXIE: SOXE bottom half-stack current control loop integral gain in digital numbers For MOXIE: SOXE bottom half-stack current control loop voltage output lower limit in calibrated units For MOXIE: SOXE bottom half-stack current control loop voltage output lower limit in digital numbers For MOXIE: SOXE bottom half-stack current control loop voltage offset in calibrated units For MOXIE: SOXE bottom half-stack current control loop voltage offset in digital numbers For MOXIE: SOXE bottom half-stack current control loop proportional gain in calibrated units For MOXIE: SOXE bottom half-stack current control loop proportional gain in digital numbers For MOXIE: SOXE bottom half-stack current control loop setpoint in calibrated units For MOXIE: SOXE bottom half-stack current control loop setpoint in digital numbers For MOXIE: SOXE top half-stack current control loop voltage output upper limit in calibrated units For MOXIE: SOXE top half-stack current control loop voltage output upper limit in digital numbers For MOXIE: SOXE top half-stack current control loop integral gain in calibrated units For MOXIE: SOXE top half-stack current control loop integral gain in digital numbers For MOXIE: SOXE top half-stack current control loop voltage output lower limit in calibrated units For MOXIE: SOXE top half-stack current control loop voltage output lower limit in digital numbers For MOXIE: SOXE top half-stack current control loop voltage offset in calibrated units For MOXIE: SOXE top half-stack current control loop voltage offset in digital numbers For MOXIE: SOXE top half-stack current control loop proportional gain in calibrated units For MOXIE: SOXE top half-stack current control loop proportional gain in digital numbers For MOXIE: SOXE top half-stack current control loop setpoint in calibrated units For MOXIE: SOXE top half-stack current control loop setpoint in digital numbers For MOXIE: SOXE cathode pressure control loop scroll compressor RPM output upper limit in calibrated units For MOXIE: SOXE cathode pressure control loop scroll compressor RPM output upper limit in digital numbers For MOXIE: SOXE cathode pressure control loop integral gain in calibrated units For MOXIE: SOXE cathode pressure control loop integral gain in digital numbers For MOXIE: SOXE cathode pressure control loop scroll compressor RPM output lower limit in calibrated units For MOXIE: SOXE cathode pressure control loop scroll compressor RPM output lower limit in digital numbers For MOXIE: SOXE cathode pressure control loop scroll compressor RPM offset in calibrated units For MOXIE: SOXE cathode pressure control loop scroll compressor RPM offset in digital numbers For MOXIE: SOXE cathode pressure control loop proportional gain in calibrated units For MOXIE: SOXE cathode pressure control loop proportional gain in digital numbers For MOXIE: SOXE cathode pressure control loop setpoint in calibrated units For MOXIE: SOXE cathode pressure control loop setpoint in digital numbers For MOXIE: SOXE bottom half-stack heater temperature control loop integral gain in calibrated units For MOXIE: SOXE bottom half-stack heater temperature control loop integral gain in digital numbers For MOXIE: SOXE bottom half-stack temperature control loop proportional gain in calibrated units For MOXIE: SOXE bottom half-stack temperature control loop proportional gain in digital numbers For MOXIE: SOXE bottom half-stack temperature control loop setpoint in calibrated units For MOXIE: SOXE bottom half-stack temperature control loop setpoint in digital numbers For MOXIE: SOXE top half-stack heater temperature control loop integral gain in calibrated units For MOXIE: SOXE top half-stack heater temperature control loop integral gain in digital numbers For MOXIE: SOXE top half-stack temperature control loop proportional gain in calibrated units For MOXIE: SOXE top half-stack temperature control loop proportional gain in digital numbers For MOXIE: SOXE top half-stack temperature control loop setpoint in calibrated units For MOXIE: SOXE top half-stack temperature control loop setpoint in digital numbers