Gain Notes for Revolution 229
	
JEM-X1: This revolution is split up by two small unplanned switch-oof periods
each of which produces a strong gain decay on reactivation, due to fast
relaxation of the charge on the microstrip plate.
However, j_cor_gain 6.4 produces a fine gain smoothing and all 
data from this revolution should be useable. Version 6.3 of j_cor_gain could
not fit the last part of the revolution, after the second re-activation, so
archived data from this revolution after IJD=1700.80 should be avoided.
Reprocessing these last science windows with OSA 5.1, or later versions, is
strongly recommended.
The first 2 data points in each curve are the partial switch-on at the beginning
of the revolution where the unit is initially activated with HV set 3 steps
below its nominal value.

This revolution reprocessed with latest software (j_calib_gain_fitting 7.2)
March 2006.


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

CAO 24/7/2005