An illustration how the resulting catalogue characteristics depend on our criterion (in terms of S and p_max) of detecting a cluster. Left panel shows the catalogue completeness with respect to ACT + PSZ2z clusters, the middle panel presents the catalogue purity with respect to Planck clusters, while the right panel demonstrates the number of cluster candidates in the resulting catalogue. White dot shows ‘Priority’ = 3 cluster candidates (S ≥ 20 and p_max ≥ 0.8), white star corresponds to ‘Priority’ = 2 objects (S ≥ 25 and p_max ≥ 0.8), white triangle marks ‘Priority’ = 1 subsample (i.e. the most reliable clusters with S ≥ 30 and p_max ≥ 0.8). In each panel, the dashed white line shows the contour with recall C = 0.86, while the dotted black line shows the contour with Purity_{cl, Planck} = 0.67. We see that as the completeness and N_ComPACT decrease, the Purity_{cl, Planck} in the sample increases.