Gain Notes for Revolution 175
	
JEM-X1: A quite normal revolution with fine gain smoothing.
All data from this revolution should be useable. 
The first few points in each curve are from the partial switch-on at the
beginning of the revolution, for which HV is set 3 steps below its nominal
value.
All sources show clear fast relaxation due to charging of the plate. This causes
a rapid gain decay after the initial switch on.
Generally low noise and glitch activity. 
Some nice clean glitches on source 2 (yellow).

The Xe line analysis confirms that the gain correction is within 1% of the ideal
for the entire revolution, and so all energy determinations in this revolution
should be reliable.

CAO 12/12/2007