Gain Notes for Revolution 610
	
JEM-X1: A quite normal revolution with okay gain fitting. However, there are
strong signs that the temperature variation in the gain has not been smoothed
correctly and we can expect non-random variations in the Xe position 
(and in the goodness of the energy calibration) across the revolution. 
All the data from this revolution should be useable, but with a caveat that
energy calibration may be off by several percent by upto 4% 

The Xe analysis confirms that the energy determination for this revolution 
only good, to -4% to +3% of the ideal. As for all revolutions, the first few 
science windows should be avoided in any analysis requiring very good gain 
determination. Since the temperature variation of the gain has tripled since 
the beginning of the mission, future offline calibrations, including 
temperature dependency, will definitely benefit this revolution when they 
become available in the coming year.

JEM-X2: No scientific data or gain history data for this unit.

CAO 4/12/2007