PDS_VERSION_ID = PDS3 /* FILE CHARACTERISTICS DATA ELEMENTS */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 291 FILE_RECORDS = 10164 /* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */ ^TABLE = ("GCMS_TOTALS_STG2.TAB",2) /* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */ FILE_NAME = "GCMS_TOTALS_STG2.TAB" DATA_SET_ID = "HP-SSA-GCMS-3-FCO/DESCENT-V1.0" DATA_SET_NAME = "HUYGENS TITAN GAS CHROMATOGRAPH MASS SPEC 3 DESCENT V1.0" PRODUCT_ID = "970910CO1_GCMS_TOTALS_STG2" PRODUCT_NAME = "970910CO1_GCMS_ALL_SWEEP_TOTALS_STG2" MISSION_NAME = "CASSINI-HUYGENS" INSTRUMENT_HOST_NAME = "HUYGENS PROBE" INSTRUMENT_HOST_ID = HP MISSION_PHASE_NAME = "GROUND" /* FU_GCO1 */ PRODUCT_TYPE = RDR /* EDR for RAW & RDR for Calibrated Data */ START_TIME = 1997-09-11T18:41:01.899 STOP_TIME = 1997-09-11T21:20:52.000 /* UTC e.g. 2005-01-14T00:00:00.000 */ /* or 2005-014T00:00:00.000 */ /* Derived by combining the T0 and */ /* the instrument absolute times */ /* or */ /* when these data are not available */ /* the GCMS_GMT (telemetry packet) */ /* time is used. */ SPACECRAFT_CLOCK_START_COUNT = 34941 SPACECRAFT_CLOCK_STOP_COUNT = 8926082 /* (DDB + GCMS) clock time */ /* 1/64 second resolution. */ /* DDB clock is set to 0 at power on */ /* and reset to 0 at T0 (begin entry */ /* sequence). Post-T0 is indicated */ /* by adding 2^23 to the DDB clock value. */ NATIVE_START_TIME = -1185.781 NATIVE_STOP_TIME = 8398.031 /* Elapsed Time in seconds. */ /* a.k.a. Mission Elapsed Time (MET) */ /* Negative values indicate pre-T0 */ /* No data is available immediately */ /* prior to T0 so pre-T0 times may */ /* be in error by 5-7 seconds. */ /* Positive values indicate post-T0 */ PRODUCT_CREATION_TIME = 2006-06-08T16:25:26 PRODUCER_ID = "GCMS_TEAM" PRODUCER_FULL_NAME = "JOHN HABERMAN" /* & Jaime Demick-Montelara */ /* & Eric Raaen */ PRODUCER_INSTITUTION_NAME = "NASA GSFC" TARGET_NAME = "TITAN" /* INSTRUMENT DESCRIPTION */ INSTRUMENT_ID = "GCMS" INSTRUMENT_NAME = "GAS CHROMATOGRAPH MASS SPECTROMETER" INSTRUMENT_TYPE = "MASS SPECTROMETER" DATA_QUALITY_ID = 1 /* DATA_QUALITY_DESC = "1 = High Quality ... 5 = Low Quality" /* Stage 1 Data must be converted to c/s */ /* Stage 2 Data has been converted to c/s */ /* but MAY NOT be fully corrected for */ /* the counter overflow condition. This */ /* data has NOT yet been fully corrected */ /* for pulse counting system effects */ /* including pulse coincidence effects */ /* and system (electronics) effects. */ /* Stage 3 Data has been converted to c/s */ /* and fully corrected by the team using */ /* pre- and post-launch instrument */ /* calibration data. */ INSTRUMENT_MODE_ID = "FU_GCO1" /* 970910CO1 */ /* FU = Flown Unit, EU = Engineering Unit */ /* FS = Flight Spare (Lab, Backup) Unit */ /* SU = Spare Unit (Lab, Backup) */ /* DESCENT indicates Entry Mission */ /* FCO indicates Flight Check Out */ /* GCO indicates Ground Check Out */ /* FCO1/GCO1 = Checkout Type 1 */ /* FCO1B/GCO1B = Checkout Type 1B */ /* FCO2/GCO2 = Checkout Type 2 */ /* e.g., FU_DESCENT = 2005-01-14 Mission */ /* DATA OBJECT DEFINITION */ OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 10164 COLUMNS = 24 ROW_BYTES = 291 DESCRIPTION = "Total counts monitored during mass sweeps for each active ion sources." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "UTC_GCMS_TIME" UNIT = "TIME" DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 23 FORMAT = "A23" DESCRIPTION = "UTC Reference time or GCMS_GMT time for this data record." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "ABS_T" UNIT = "N/A" DATA_TYPE = ASCII_INTEGER START_BYTE = 25 BYTES = 8 FORMAT = "I8" DESCRIPTION = "(Spacecraft DDB + GCMS clock) time. Value starts at zero at power on and is reset to zero at sequence start (T0). 2^23 is added to the value to indicate post T0 times. Each 'tic' represents 1/64 second." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "SCNDS" UNIT = "SECONDS" DATA_TYPE = ASCII_REAL START_BYTE = 34 BYTES = 10 FORMAT = "F10.3" DESCRIPTION = "Time relative to spacecraft T0 event. Negative times indicate pre-T0." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GCMS_GMT" UNIT = "TIME" DATA_TYPE = ASCII_REAL START_BYTE = 45 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Spacecraft Event Time (SCET) corresponding with this data record." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "DATE" UNIT = "TIME" DATA_TYPE = CHARACTER START_BYTE = 57 BYTES = 11 FORMAT = "A11" DESCRIPTION = "SCET Date (2005-01-14)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "TIME" UNIT = "TIME" DATA_TYPE = CHARACTER START_BYTE = 69 BYTES = 14 FORMAT = "A14" DESCRIPTION = "SCET Time (hh:mm:ss.000)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "STREAM" UNIT = "N/A" DATA_TYPE = CHARACTER START_BYTE = 84 BYTES = 8 FORMAT = "A8" DESCRIPTION = "Indicates the telemetry stream (A or B) for this scan. ALWAYS B during descent." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "SEQ_CNTR" UNIT = "N/A" DATA_TYPE = ASCII_INTEGER START_BYTE = 93 BYTES = 10 FORMAT = "I10" DESCRIPTION = "GCMS counter. Refer to the GCMS Software User's Manual for information." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "TYPE" UNIT = "N/A" DATA_TYPE = ASCII_INTEGER START_BYTE = 104 BYTES = 6 FORMAT = "I6" DESCRIPTION = "Identifies GCMS sweep conditions for each sweep. Refer to the GCMS Software User's Manual." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "T1A" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 111 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 1, sample 1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "T1B" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 123 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 1, sample 2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "T1C" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 135 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 1, sample 3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "T2A" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 147 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 2, sample 1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "T2B" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 159 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 2, sample 2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "T2C" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 171 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 2, sample 3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "T3A" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 183 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 3, sample 1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "T3B" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 195 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 3, sample 2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "T3C" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 207 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 3, sample 3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = "T4A" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 219 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 4, sample 1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = "T4B" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 231 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 4, sample 2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 NAME = "T4C" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 243 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 4, sample 3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 22 NAME = "T5A" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 255 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 5, sample 1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 23 NAME = "T5B" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 267 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 5, sample 2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 24 NAME = "T5C" UNIT = "COUNTS PER SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 279 BYTES = 11 FORMAT = "F11.1" DESCRIPTION = "Total ion count, ion source 5, sample 3" END_OBJECT = COLUMN END_OBJECT = TABLE END