CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL /* File Format and Length */ PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 122 FILE_RECORDS = 3424 INSTRUMENT_NAME = "DUST IMPACT DETECTOR" INSTRUMENT_ID = "DID" DATA_SET_ID = "GIO-C-DID-3-RDR-HALLEY-V1.0" OBSERVATION_ID = "089001" OBSERVATION_TIME = 1986-03-13T23:31:12.000Z PRODUCT_ID = DID00003 PRODUCT_CREATION_TIME = 2004-09-19 START_TIME = "UNK" TARGET_NAME = "HALLEY" /* Record Pointer to Object */ ^TABLE = "DID00003.FIT" /* Description of Object in File */ OBJECT = TABLE ROWS = 3424 ROW_BYTES = 122 INTERCHANGE_FORMAT = ASCII DESCRIPTION = "IMPACT PLASMA AND MOMENTUM SUB-SYSTEM IPM-M(DID1-M). MASS THRESHOLDS FOR POST-ENCOUNTER DATA (T > 00:11:02). PRE-ENCOUNTER DATA ARE AFFECTED BY NON-RETRACTION OF INSTRUMENT COVER. UNKNOWN HIGHER MASS THRESHOLDS APPLICABLE BEFORE T APPROX 00:10 FOLLOWED BY POSSIBLE COVER EROSION OR RETRACTION. QUOTED FLUXES ARE CUMULATIVE (MASSES > THRESHOLD B) B) EFFECTIVE THRESHOLD BASED ON MEAN SENSITIVITY OF SENSORS C) MOST PROBABLE MASS FOR DIFFERENTIAL DATA CHANNEL B C 1 4.0E-13 5.2E-13 (KG) 2 1.0E-12 1.4E-12 3 5.0E-12 7.0E-12 4 4.0E-11 8.6E-12 EFFECTIVE AREA OF SENSOR = 0.0119 M**2 FOR ALL CHANNELS PROCESSING FLAGS RELATE TO PRODUCTION OF COUNTS FROM ORIGINAL MERGED DATA TAPES. DUE TO LOSS OF TELEMETRY CERTAIN DIDSY DATA BLOCKS WERE INCOMPLETE. FLAGS INDICATE PROCESSING TO EXTRACT THE USEFUL DATA FROM THESE BLOCKS. EACH OF FIVE FLAGS ARE SET TO * IF: 1) INCOMPLETE DATA BLOCK 2) NON-CONSECUTIVE BLOCK NUMBER IN DATA TRAIN 3) BLOCK TIMING INCONSISTENT 4) FRAME COUNT INCONSISTENT 5) UNUSUAL FORMAT NUMBER IN FRAME INDICATING TELEMETRY BREAK A NULL VALUE FOR COUNTS OR FLUX OR ERROR IS INDICATED BY -9" COLUMNS = 17 OBJECT = COLUMN NAME = "HR" DESCRIPTION = "GROUND RECEIVED TIME" DATA_TYPE = ASCII_INTEGER BYTES = 2 UNIT = "HOUR" START_BYTE = 1 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "MIN" DESCRIPTION = "GROUND RECEIVED TIME" DATA_TYPE = ASCII_INTEGER BYTES = 2 UNIT = "MIN" START_BYTE = 4 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SEC" DESCRIPTION = "GROUND RECEIVED TIME" DATA_TYPE = ASCII_REAL BYTES = 4 UNIT = "SEC" START_BYTE = 7 FORMAT = "F4.1" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DISTANCE" DESCRIPTION = "COMETOCENTRIC" DATA_TYPE = ASCII_INTEGER BYTES = 6 UNIT = "KM" START_BYTE = 12 FORMAT = I6 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLAGS" DATA_TYPE = CHARACTER BYTES = 5 START_BYTE = 19 FORMAT = A5 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_1_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 25 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_1_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 35 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 45 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_2_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 49 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_2_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 59 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 69 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_3_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 73 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_3_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 83 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 93 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_4_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 97 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IPM_M_4_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 107 FORMAT = "E9.3" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 117 FORMAT = I3 END_OBJECT = COLUMN END_OBJECT = TABLE END