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Table 2
Calibration dependency.
| Parameter | Dependency |
|
|
|
| Linespread function | mirror PSF |
| gratings alignment | |
| gratings scattering | |
| particle contamination of the optics | |
| (causes additional scattering) | |
| pointing reconstruction accuracy | |
|
|
|
| Wavelength scale | grating dispersion parameters |
| mirror – grating assembly alignment | |
| focal plane camera position | |
| CCD positions in the camera | |
| stability of optical bench | |
| pointing reconstruction accuracy | |
|
|
|
| Effective area | mirror effective area |
| geometrical overlap gratings/mirrors | |
| grating efficiency | |
| CCD quantum efficiency | |
| CCD molecular contamination | |
| CCD “absorption” layers (filters) | |
| CCD thickness | |
| event pattern processing | |
| CCD redistribution | |
| read-out noise | |
| CCD dark current | |
| charge transfer inefficiency | |
| X-ray event pattern | |
| exposure | |
| satellite pointing | |
| CCD cosmetic defects | |
| particle background | |
| data selections | |
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