Map of the mean value per eROSITA tile of completeness and purity (compur[6,7,8] in the catalogues) at the intersection point (see Figure 6 for a visualisation) as a function of DET_LIKE_0, for LS10 (left panel), GDR3 (middle panel), and CW2020 (right panel). With the exception of the Magellanic Clouds and the Galactic plane, completeness and purity are high, and they increase with the detection likelihood. There are a few tiles in the Gaia maps where the completeness and purity curves do not intersect due to the limited number of sources.