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When one looks at the common_mode dataset for XppGon.0:Cspad2x2.1, one sees the values are -10000, indicating no common mode calibration was done. The module loaded in this example to do calibration, cspad_mod.CsPadCalib, is equivalent to what o2o-translate would do. More information on o2o-translate calibration can be found at CsPad calibration in translator. Documentation on the CsPadCalib module is found in psana - Module Catalog.

An issue users may run into is understanding what calibration was done and recovering the raw data just from examining the hdf5 output. In the case of cspad, an understanding of the CsPadCalib module along with the what is in the hdf5 file does allow one to recover the uncalibrated data. This may not be possible with other calibration modules and detectors, in particular if nonlinear calibration algorithms are applied, such as applying a threshold.

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