Calibration Access and Data Handbook

Procedure

The task returns the X-ray detection efficiency for the chosen area on the CCD. The nominal function is expected to return a vector of values for energy bins, by consulting the QuantumEff file for the appropriate spatial limits and interpolating the between efficiency values stored for neighbouring energy points. A sub-set of pattern types can be selected (for example single pixel events, bi-pixels etc.). These can read from individual columns. (TBD is one column for every pattern or collected in sub-groups: i.e. in the MOS case, patterns 1-4 are bi-pixel events, but they could be stored combined as one column, or the CAL can implement the intelligence to sum up the 4 columns. Ad interim we use a separate column in the CCF per individual pattern number.)