X-ray and tSZ emission of the triplet-cluster system PLCK G334.8-38.0. Left: XMM-Newton background-subtracted, detector-averaged count-rate map for 0.7 − 1.2 keV (masked and smoothed with a 15″ wide Gaussian kernel). Middle: Planck tSZ signal (Planck Collaboration XXII 2016). Right: X-ray source mask. Radial profiles are extracted from the cluster profile region and the supercluster zone was designed to enclose all three of those regions. The CXB region is used to study the astrophysical background. Further details of the different regions are given in Sect. 2.3.