Calibration Access and Data Handbook
Next: Ground calibration
Bad parts of the CCD surfaces are identified by their starting coordinates RAWX,RAWY and length YLENGTH
and fall into different categories DESCRIPTION in lower case for uplinked quantities or upper case in the CCF only
- A dead pixel gives no data and kills other pixels transfered through it.
- A hot pixel delivers a high, nearly constant, signal independent of X-ray illumination almost every readout.
- A flickering pixel depends on both the CCD settings and the throughput of charge.
- A pin-hole defect in the aluminium light shield.