Gain Notes for Revolution 916
	
JEM-X1: No scientific data or gain history for this unit.


JEM-X2: A quite normal revolution with fine gain fitting. All the data from 
this revolution should be useable. The Xe line analysis confirms the 
good gain calibration for this revolution with all except the very first Science
Windows having a Xe line position with about 2-3% of the ideal value.
As always, however, it is suggested that
users avoid the first few science windows in each revolution since this is
where the instrument warms up and gain variations across the plate settle down.

However, for many of the first SCWs all events have been assigned a non-zero
STATUS value (zero indicating good events), which means that any module or
application that selects only 'perfect' events will fail, with an empty event
list. If you have problems due to a lack of events try turning off the STATUS
selection criterion.



CAO 28/04/2010