The following is a map of the relative QE response across the detector, as displayed on the previous page.

HRC-I Flat Field
Median Relative QE v1.1 (FITS file)

The above image was made by performing 5x5 boxcar smoothing on the following image:

HRC-I Flat Field
Median Relative QE v1 (FITS file)

Below are flat field maps for the HRC-I at eight energy bands. Six of these formed the basis of the median maps above. The two flat fields taken as subassembly calibration (SAC) that were generated using L-lines, Ni L-alpha (852 eV) and Ag L-alpha (2984 eV), were excluded from the median image due to beam non-uniformities which resulted in substantially distorted maps. Each individual energy map was normalized to the mean of its central region (the central 1/3 in x by the central 1/3 in y) and leaving a central value of one.

HRC-I Normalized QE Maps
B K - 183 eV v1 (FITS file)	C K - 277 eV v1 (FITS file)	O K - 525 eV v1 (FITS file)	Ni L - 852 eV v1 (FITS file)
Al K - 1487 eV v1 (FITS file)	Ag L - 2984 eV v1 (FITS file)	Ti K - 4511 eV v1 (FITS file)	Fe K - 6404 eV v1 (FITS file)

To give the user an idea of the relative QE response of the detector at different energies, we have prepared two maps of the standard deviation from our median above. The first map includes only the six energies used in constructing the median, while the second includes all eight energy bands.

HRC-I Standard Deviation of the QE Maps
6 Energy Band Deviation from Median v1 (FITS file)	8 Energy Band Deviation from Median v1 (FITS file)

Below are images showing how the response at each energy differs from the 6 energy median (used to create the standard deviation maps above).

HRC-I QE Maps Minus Median
B K - 183 eV v1 (FITS file)	C K - 277 eV v1 (FITS file)	O K - 525 eV v1 (FITS file)	Ni L - 852 eV v1 (FITS file)
Al K - 1487 eV v1 (FITS file)	Ag L - 2984 eV v1 (FITS file)	Ti K - 4511 eV v1 (FITS file)	Fe K - 6404 eV v1 (FITS file)

Comments to CxcCal@cfa.harvard.edu

Last modified: 09/25/12

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