Gain Notes for Revolution 404
	
JEM-X1: An ordinary revolution with fine gain smoothing. All the data from this
revolution should be useable. The small gap at the beginning of the revolution
should have no significance at all for the energy correction of the science
data since the gain is smoothed perfectly well either side of the gap.

JEM-X2: This revolution proceeded as planned and the correct software was
finally used by ISDC. The result: fine gain history and gain smoothing. All of
the data from this revolution should  be useable as is. There are signs of the
grey filtering used on this unit to conserve telemetry (small regular breaks
in the gain history), but this in no way affects the gain smoothing or the
energy correction of the science data. The same comments apply about the small
gap at the beginning of the revolution as for JEM-X1.


CAO 7/02/2006

JEM-X2: The new Xe peak analysis was added after determination of new improved calibration
reference channels for JEM-X2 IMOD epochs 12 and 13 (revs 311 to 510 and 511
onward, respectively). This brings the Xe level closer to the 29.6 keV ideal
value. However, there is so little data to analyse that no great importance can
be attached to this analysis or to the average position of the Xe line since
a whole revolution Xe evolution is not possible.

CAO 23/10/2007