Coronal probability of the eRASSl sources as a function of the separation between the best coronal counterpart and the Chandra detection given in units of positional uncertainty. The solid lines show the thresholds at P_coronai = 0.53 and r/σ_Chandra = 2. The color scales with the ratio of the positional uncertainties from eRASSl and Chandra. The numbers of sources in the resulting four quadrants are specified above and below the figure.