Data Processing Title Gif
Four generic types of data are sent back by the cosmic ray subsystem telescopes: rates data, pulse height data, internal calibration data and engineering housekeeping data. All are preserved in the reduction steps described below.

A time-ordered dataset containing fifteen minute data blocks (VOLUMEs) of PHA and RATE data is created from the experimenter data records. The data are decompressed and reorganized while preserving the time order. Each VOLUME contains summarized counts and accumulation times for RATES. In addition, the PHA data is sorted and organized by event types. The time tags of individual particles are lost in this process. This database is called the ENCYCLOPEDIA (ENCY) Database.

Using the instrument response matrices and the ENCY database, rates and particle fluxes averaged over multiples of fifteen minutes can be derived. The desired count rates and fluxes are computed on demand, and the NSSDC data is produced in this manner. We have submitted encounter data at 15 minute resolution and the rest of the data at 6 hour time resolution. The interplanetary dataset submitted to NSSDC may be periodically updated, with the new submissions replacing the previous data.

All permanent databases reside on the CRS team's Sun storage devices.

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