Top-row: one-to-one comparison of the integrated SZ flux, Y₅₀₀, using as reference x-axis values fluxes computed from the PACT maps as presented in Aghanim et al. (2019). Bottom-row: average stacked y profiles in units of R₅₀₀ and . Columns present the various steps of validation: left-column: check of Planck dataset version and y map resolution. Middle-column: check of the impact of the radial sampling factor δ_r. Right-column: comparison of profiles derived from Planck and PACT maps and samples. Labels in the legends are for the various test configurations as defined in Table 2 and discussed Sect. 4. For the three profile plots, the red shaded envelop is the same and corresponds to the 1σ dispersion across this same sample as published by P13 (left panel of their Fig. 3). We also adopted their radial range. The error bars correspond to the square root of the diagonal of the covariance matrix and therefore bear a certain degree of correlation between points.