XMM-Newton Science Analysis System


tabgtigen (tabgtigen-2.12.3) [xmmsas_20070308_1802-6.6.0]

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Special Requirements

The task needs to access the time tags of the HK parameters in the input file in order to compute GTI boundaries. The latter need to be single real numbers in the same time frame as used for the event lists, i.e., basically number of seconds since the fixed mission reference time. Time tags in HK files in the ODF, however, are 'Earth-received-time' stamps in a string representation, and therefore, tabgtigen needs to convert this into the events time frame. This requires access to the ODF S/C time correlation file.

This requirement clearly makes the tasks dependent on the presence of the ODF the processed HK parameter data stem from.