Illustration of the three SZ quality grades as defined in Sect. 2. From left to right the three quality cases are: QSZ = A,B,C. The top row shows a 100′ × 100′ SZ map with a spatial resolution of 10′, centred on the candidate position, derived using the MILCA reconstruction method (Hurier et al. 2010). The colour table is identical for all clusters, with the Compton y parameter spanning the range [ − 3 × 10-6,1 × 10-5] . The bottom row shows the associated SZ spectrum from aperture photometry measurements within R500 (see text for details). The red line is the SZ spectrum normalised to the Y500 value obtained from MMF blind detection.