Gain Notes for Revolution 1505

This is one of the later revolutions in the mission where the calibration
sources have become so weak that for the best energy determination and
IC Gain History table is needed.
 

To get optimal results with this revolution it is necessary to use the IC gain history.
See notes in revolutions prior to revolution 1433 to find out how to do this
if you don't already know.

The basic gain calibration for this revolution is done using the 2 Fe calibration
sources in JEM-X1 for both units.

Latest OSA software (version 10 and higher) automatically cuts out the first
Science windows of data from each revolution to ensure that people do not use data
from the instrument-settling period. This process can be overruled, but only by
experienced users.
	
JEM-X1: 

The Xe line analysis performed using the IC table shows good gain
correction with all science windows having a Xe level 
within 3-4% of the ideal, except for the usual settling points and c
couple of misfitted outliers. All but 5 well-fitted SCWs are within 3%
of the ideal.
As usual, it is recommended that users avoid the first few science 
windows for energy-sensitive applications (automatically removed by OSA 10.0).


JEM-X2: 

The Xe line analysis performed using the IC table shows excellent gain
correction with all science windows having a Xe level well
within 1-2% of the ideal, except for one outlier and the usual settling
points at the beginnng of the revolution. 
As usual it is recommended that users avoid the first few science 
windows for energy-sensitive applications (automatically removed by OSA 10.0).

CAO 05/03/2015