Example of the data available for photometric redshift inspection and validation with photXclus. xclass22690 was identified at a photometric redshift of 0.81 after inspection of the grz 3-color image from the LS DR9, with X-CLASS X-ray contours overplotted in white (Left). The histogram of the background-subtracted number of galaxies in bins of photometric redshifts is shown on the top right, while the diagnosis plots from photXclus are shown on the bottom right (Left: MCMC traces; Right: corner plot of the marginal posteriors for z_clus and λ_clus).