CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL /* File Format and Length */ PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 122 FILE_RECORDS = 6217 DATA_SET_ID = "GIO-C-DID-3-RDR-HALLEY-V1.0" OBSERVATION_ID = "089004" OBSERVATION_TIME = 1986-03-13T23:31:12.000Z START_TIME = "UNK" TARGET_NAME = "HALLEY" /* Record Pointer to Object */ ^TABLE = "DID00004.TAB" /* Description of Object in File */ OBJECT = TABLE ROWS = 6217 ROW_BYTES = 122 INTERCHANGE_FORMAT = ASCII NOTE = "Created by FITS2PDS" DESCRIPTION = "MAIN SHIELD MOMENTUM SENSORS ON SMALL SECTOR (DID4) MASS THRESHOLDS: QUOTED FLUXES ARE CUMULATIVE (FOR ALL MASSES > THRESHOLD B) A) MOST SENSITIVE PART OF SENSOR B) EFFECTIVE THRESHOLD (95% OF IMPACTS HAVE LARGER MASS) C) MOST PROBABLE MASS FOR DIFFERENTIAL DATA CHANNEL A B C 1 2.2E-12 7.7E-12 2.1E-11 (KG) 2 3.7E-11 1.3E-10 3.0E-10 3 2.2E-10 7.7E-10 2.2E-9 4 3.2E-8 1.1E-7 2.6E-6 EFFECTIVE AREA OF SENSOR DEPENDS ON MASS DISTRIBUTION INDEX ALPHA AND DEFINED LIMITING MASS. TABLES FOR ALPHA = 0.3-2.0 AND MASS (B) BELOW. 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 FLUXES CALCULATED ASSUMING ALPHA = 0.90. FOR OTHER VALUES OF ALPHA: ALPHA CHANNEL1 CHANNEL2 CHANNEL3 0.3 0.344 0.207 0.181 0.4 0.252 0.176 0.166 0.5 0.203 0.162 0.158 0.6 0.176 0.153 0.152 0.7 0.160 0.148 0.147 0.8 0.149 0.143 0.143 0.9 0.142 0.139 0.139 1.0 0.136 0.135 0.136 1.1 0.132 0.132 0.133 1.2 0.129 0.129 0.130 1.3 0.126 0.127 0.127 1.4 0.123 0.124 0.125 1.5 0.121 0.123 0.124 1.7 0.118 0.120 0.121 2.0 0.116 0.118 0.119 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 OBJECT = COLUMN NAME = "MIN" DESCRIPTION = "GROUND RECEIVED TIME" DATA_TYPE = ASCII_INTEGER BYTES = 2 UNIT = "MIN" START_BYTE = 4 FORMAT = I2 END_OBJECT OBJECT = COLUMN NAME = "SEC" DESCRIPTION = "GROUND RECEIVED TIME" DATA_TYPE = ASCII_REAL BYTES = 4 UNIT = "SEC" START_BYTE = 7 FORMAT = "F4.1" END_OBJECT OBJECT = COLUMN NAME = "DISTANCE" DESCRIPTION = "COMETOCENTRIC" DATA_TYPE = ASCII_INTEGER BYTES = 6 UNIT = "KM" START_BYTE = 12 FORMAT = I6 END_OBJECT OBJECT = COLUMN NAME = "FLAGS" DATA_TYPE = CHARACTER BYTES = 5 START_BYTE = 19 FORMAT = A5 END_OBJECT OBJECT = COLUMN NAME = "MSM4_1_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 25 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "MSM4_1_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 35 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 45 FORMAT = I3 END_OBJECT OBJECT = COLUMN NAME = "MSM4_2_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 49 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "MSM4_2_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 59 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 69 FORMAT = I3 END_OBJECT OBJECT = COLUMN NAME = "MSM4_3_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 73 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "MSM4_3_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 83 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 93 FORMAT = I3 END_OBJECT OBJECT = COLUMN NAME = "MSM4_4_COUNTS" DATA_TYPE = ASCII_REAL BYTES = 9 START_BYTE = 97 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "MSM4_4_FLUX" DATA_TYPE = ASCII_REAL BYTES = 9 UNIT = "M**-2*SEC**-1" START_BYTE = 107 FORMAT = "E9.3" END_OBJECT OBJECT = COLUMN NAME = "ERROR" DATA_TYPE = ASCII_INTEGER BYTES = 3 UNIT = "PERCENT" START_BYTE = 117 FORMAT = I3 END_OBJECT END_OBJECT = TABLE END