The High Speed Tap Data Processing

The High Speed Tap event list used was taken as TRW ID I-IAS-EA-2.017, which began on 09 May 1997 at 22:12 GMT. The first event was at 22:17 and the last event was at 23:00 GMT.

An RV format event list was created from the fits format bias frames (taken with the gate valve shut, immediately prior to the data) and the fits format data frames using ``xrcf_find_events''. To directly compare the High Speed Tap event list to the telemetry event list the High Speed Tap times and coordinates were converted to telemetry times and coordinates, and events not included in the telemetry event list were removed. The times had to be converted because the telemetry times are given in seconds from the beginning of 1997 while the High Speed Tap times are given in seconds from the beginning of 1994. The coordinates needed to be converted because the telemetry row and column coordinates are given in chip coordinates while the High Speed Tap coordinates are given in readout coordinates.

There are two types of events that the High Speed Tap event list includes that the telemetry event list does not; events that occur outside of the telemetry window, and events in frames that the telemetry dropped.