Example of cluster count-rate measurement with the pyproffit method. The displayed cluster is XLSSC 093 at a redshift of 0.429. (a) X-ray mosaic around the cluster; the image is 30 arcmin aside. (b) Particle background map. (c) Combined exposure map along with the masks hiding the neighbouring sources. (d) Extracted cluster profile (black crosses); the green line displays the particle background level extracted from map (b): this component is already subtracted from the displayed profile. (e) Overlaid on the extracted profile, the reconstructed (PSF-deconvolved) profile is shown in blue along with the 1-σ estimated uncertainty. (f) Count-rate posterior distribution (MOS1 normalised) of the reconstructed profile.