Gain Calibration Notes for Rev. 364
	
Relatively little noise and no large glitches. This revolution has one short
break and one long break. The former has no effect on the gain, but the latter
is sufficiently long as to produce a steep gain increase when the High Voltage
is switched on again, just as we see at the beginning of each revolution, after
perigee. Interestingly, the most noisy, glitch source, number 4 is most strongly
affected by this effect.

The smoothing is however correct, so there is no problem using data
from this entire revolution.

The Xenon line analysis shows that the Xe line is well within the 29-30keV
range for most of the revolution. The only time period where the Xe line was outside
the 29-30 keV range was at the very beginning of the revolution just after
switch on. Users should be cautious when using these first science windows in a
revolution for critical spectral analyses. Otherwise, the gain correction has
worked very well.


CAO 7/2/2007