Reduced Count Rate and Pulse Height Analyzer Data

Description

This data set, supplied by the experimenter, consists of proton and alpha particle count and pulse-height analyzer accumulator readings in a time-ordered format on binary, IBM-compatible magnetic tape. 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. Each physical record consists of 500 logical records of 12 bytes each. The logical records are of two types: header records and data records. A given header record is followed by from 1 to 64 data records of the same spacecraft subcommutated sequence. Each tape terminates with an EOD flag in the last good data record. Each header record includes various spacecraft temperatures, spin rate, telemetry bit rate, and other housekeeping parameters. Each data record includes time, pulse height analyzer output (D1 and D3 elements of the cosmic-ray telescope), and data quality information. The data are uncorrected but have been edited to the extent that doubtful information has been flagged and unusable data deleted.