Reduced Count Rate and Pulse Height Analyzer Data

Description

This data set consists of proton and alpha particle count and pulse-height analyzer accumulator readings in a time-ordered format on binary, IBM 7094 compatible magnetic tapes. The time resolution for the count accumulator data ranged from about one measurement per 0.4 to 28 s depending on the spacecraft telemetry rate. The tape format consists of physical records each 6000, 6-bit bytes in length. Each physical record consists of 500 logical records of 12 bytes each. The logical records include header and data logical records. A given header logical record is followed by from 1 to 64 data logical records of the same spacecraft subcommutated sequence. Each tape terminates with an EOF flag in the last good data record. Each header logical record includes various spacecraft temperatures, spin rate, telemetry bit rate, and other housekeeping parameters. Each data logical record includes time, pulse height analyzer output, four telescope coincidence count rates, and data quality information. The data are uncorrected but have been edited to the extent that doubtful information has been flagged and unusable data have been deleted.