PDS_VERSION_ID = PDS3 DATA_SET_ID = "DS1-C-PEPE-2-EDR-BORRELLY-V1.0" STANDARD_DATA_PRODUCT_ID = "ASCII ION M/Q" PRODUCT_ID = "MQ01263_A" PRODUCT_TYPE = "EDR" PRODUCT_CREATION_TIME = 2003-10-03T18:00:00 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 163 FILE_RECORDS = 4224 START_TIME = 2001-263T00:15:57 STOP_TIME = 2001-264T00:08:22 SPACECRAFT_CLOCK_START_COUNT = "UNK" SPACECRAFT_CLOCK_STOP_COUNT = "UNK" INSTRUMENT_HOST_NAME = "DEEP SPACE 1" INSTRUMENT_HOST_ID = "DS1" MISSION_PHASE_NAME = "BORRELLY ENCOUNTER" TARGET_NAME = "19P/BORRELLY 1 (1904 Y2)" INSTRUMENT_NAME = "PLASMA EXPERIMENT FOR PLANETARY EXPLORATION" INSTRUMENT_ID = "PEPE" DESCRIPTION = " ASCII edited raw DS1 PEPE mass/charge (composition) data from the Borrelly flyby. The data cover the time period between 2001-09-20T00:15 and 2001-09-21T00:08." NOTE = " A binary version of this file is available as MQ01263_B.DAT." ^TABLE = "MQ01263_A.TAB" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 4224 COLUMNS = 20 ROW_BYTES = 163 DESCRIPTION = " These data are counts of TOF events, selected on the basis of their time-of-flight (i.e. all events with a TOF in a specified range.) This largely (but not entirely) separates the data into energy spectra of species with a mass to charge ratio within a specific range. The TOF bins were selected so that MQ bin 0 would contain exclusively protons, MQ bin 1 would contain primarily He++, and so that the remaining 13 bins would span the TOF range with logarithmic widths. These data are collapsed over all azimuths and elevations. The data are stored in an ASCII table. Each data record contains the time of the beginning of the measurement and an offset time. The offset time gives the start of the first integration in the collapsed data. Each record contains ion counts in the fifteen M/q bins. There are 64 records in each measurement, one for each of the 64 energy steps." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "MEASUREMENT_NUMBER" DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 5 FORMAT = "I5" DESCRIPTION = " Measurement number from the start of day. This value only updates when the previous measurement is complete." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "PDS_START_TIME" DATA_TYPE = TIME START_BYTE = 7 BYTES = 17 FORMAT = "A17" DESCRIPTION = " The spacecraft event time (UTC) of the measurement start time represented in the ISO standard time format: yyyy-dddThh:mm:ss" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "MEASUREMENT_START_TIME" UNIT = "SECOND" DATA_TYPE = ASCII_INTEGER START_BYTE = 25 BYTES = 8 FORMAT = "I8" DESCRIPTION = " The spacecraft event time (UTC) of the measurement start time represented as the number of seconds after the J2000 epoch (2000-001T12:00:00.000)." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "RECORD_OFFSET_TIME" UNIT = "SECOND" DATA_TYPE = ASCII_INTEGER START_BYTE = 34 BYTES = 5 FORMAT = "I5" DESCRIPTION = " The offset time gives the start of the first integration in the collapsed data." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "ENERGY_STEP" DATA_TYPE = ASCII_INTEGER START_BYTE = 40 BYTES = 2 FORMAT = "I2" DESCRIPTION = " Energy step number (0-63). See Table 3 in the data set catalog file (PEPE_BORRELLY_DS.CAT) for the energy associated with each energy step number." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "M/Q_BIN_0" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 43 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 0 --------------------------------------------------------- MQ number Minimum TOF Maximum TOF --------------------------------------------------------- 0 48 88 1 89 105 2 106 125 3 126 150 4 151 179 5 180 214 6 215 256 7 257 307 8 308 367 9 368 438 10 439 524 11 525 627 12 628 750 13 751 896 14 897 1071 " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "M/Q_BIN_1" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 51 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "M/Q_BIN_2" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 59 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 2." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "M/Q_BIN_3" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 67 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 3." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "M/Q_BIN_4" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 75 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 4." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "M/Q_BIN_5" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 83 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 5." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "M/Q_BIN_6" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 91 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 6." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "M/Q_BIN_7" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 99 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 7." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "M/Q_BIN_8" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 107 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 8." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "M/Q_BIN_9" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 115 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 9." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "M/Q_BIN_10" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 123 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 10." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "M/Q_BIN_11" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 131 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 11." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "M/Q_BIN_12" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 139 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 12." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = "M/Q_BIN_13" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 147 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 13." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = "M/Q_BIN_14" UNIT = "COUNT" DATA_TYPE = ASCII_INTEGER START_BYTE = 155 BYTES = 7 FORMAT = "I7" DESCRIPTION = " Ion counts in M/q bin 14." END_OBJECT = COLUMN END_OBJECT = TABLE END