HRCI XRCF QE/Gain ratio maps
B K 183 eV 
O K 525 eV 
Al K 1487 eV 
Ti K 4511 eV 
HRCI Flight QE/Gain ratio maps
B K 183 eV 
C K 277 eV 
O K 525 eV 
Ni L 852 eV 
Al K 1487 eV 
Ag L 2984 eV 
Ti K 4511 eV 
Fe K 6404 eV 
QEGain scatter plots
Scatter plots of the QE and Gain of each image/gain cell of SAC flat fields
(blocking factor of 128), from
within the CsI coated region (XRCF images were truncated to exclude the
vignetted area). Due to the large number of data points (11772 for Flight,
8175 for XRCF), only 1/15 of the points are plotted, selected randomly. The
QE values have been normalized, such that the mean of the central 12% of
each flat field image is scaled to unity. Scaling factors were determined
by eye, so that the curves for all energies are continuous.

B 
red 
scale factor = 1


O 
green 
scale factor = 1.2


Al 
blue 
scale factor = 1.4


Ti 
black 
scale factor = 1.5 

B 
red 
scale factor = 1 

C 
yellow 
scale factor = 1.05 

O 
green 
scale factor = 1.15 

Al 
cyan 
scale factor = 1.2 

Ag 
blue 
scale factor = 1.25 

Fe 
magenta 
scale factor = 1.27 

Ti 
black 
scale factor = 1.3 