AGN-subtracted soft (0.5-2 keV, upper-left panel) and hard (2-7 keV, upper-right panel) band images of the Spiderweb protocluster in a field of view of ∼90 × 70 arcsec². The blue concentric circles represent the regions within which we derived the surface brightness and correspond to an outer radius of 2, 4, 7, 10, 13, 17, and 21 arcsec, with the central blue circle showing the region where the unresolved AGN emission makes it impossible to estimate the diffuse emission. The green circles represent removed unresolved sources and the magenta boxes represent the eastern and western jet regions overlapping with the radio emission, and are excluded from our analysis since they are dominated by the diffuse, non-thermal IC emission from the jets. For the purposes of visualization, the central surface brightness is parametrized with n_d = 4, as discussed in Tozzi et al. (2022). In the lower-left and lower-right panels, we show the corresponding background-subtracted surface brightness profiles computed according to Equation (1). The black bars represent the 1σ uncertainties associated with data points including the Poissonian errors on the total counts and the background expected counts. The gray-shaded area marks the value of surface brightness parametrized with n_d = 4 in the first bin and the 1σ background level in the other bins.