Generate random with sensitivity maps
The random has to follow the logNlogS. See https://gitlab.mpcdf.mpg.de/joco/erosita_xi_ggl/-/blob/master/python/eFEDs_wprp/001_randoms_add_z_flux_SensMapVariation.py
The random has to follow the logNlogS. See https://gitlab.mpcdf.mpg.de/joco/erosita_xi_ggl/-/blob/master/python/eFEDs_wprp/001_randoms_add_z_flux_SensMapVariation.py