Gain Notes for Revolution 483
	
JEM-X1: A quite normal revolution with fine gain fitting. All the data from 
this revolution should be useable. The period between IJD= 2463.05 and 2463.07
is now officially declared a Bad Time Interval (BTI): a 1 kSec science window
was performed with only one anode segment out of four activated as an experiment.

JEM-X2: This unit was activated in this revolution and the preceeding one
strictly for experimental engineering purposes. The onboard software for this
revolution was uploaded so that the instrument had the same configuration as 
in revolution
170. Therefore the onboard tables, rejection criteria etc. do not match the
matured state of the instrument as it stands in this revolution. Science data
from this revolution with therefore be considerably compromised in its gain
calibration and sensitivity determination, and should not be used for 
scientific purposes. Though the gain smoothing has worked admirably, there are
signs of other engineering experiments that will degrade the quality of the
science data: multiple changes of HV value, a time zone only 17 minutes long
etc. DO NOT USE THIS DATA FOR SCIENTIFIC PURPOSES. This entire revolution has
now officially been declared a BTI for this instrument, that is to say
IJD= 2460.80 to 2463.80.

CAO 10/11/2006

JEM-X2: New Xe analysis added after creation of new IMOD epochs for JEM-X2 unit.
This included new reference calibration channels that raised the average
Xe line position for the revolution from 28.6 keV to 29.4 keV.

CAO 19/10/2007