The FOT data formats and reduction softwares have been described in section 1.1.3.
For GRBM 1s ratemeters and 240 channels energy spectra accumulation
we use specific XAS procedures. As for the raw data, GRBM trigger times and the HRTP
are managed by means of specifically developed software.
XAS software allows the accumulation of GRBM ratemeters and spectra in
specific time windows. The time associated to the ratemeters and spectral packets
is converted from OBT to UT directly by the accumulation procedures.
The satellite attitude and ephemeris files contained in the FOT allow for
the reconstruction of the position of a source of known celestial coordinates
with respect to each LS axis. The data contained in these files allow also for
the reconstruction of the Earth center position with respect to each GRBM detector and
thus to calculate the start and end times of the occultation of each
celestial source, as for the Crab nebula (section 4.4).