XMM-Newton S_X profiles calculated from XMM-Newton data in the energy band 0.5–2.0 keV. Top: The full azimuthal S_X profiles. The top panel shows the S_X profiles (solid lines) and the corresponding β-model fits (dotted lines) of all XMM-Newton detectors with circular annuli setup (blue) and box annuli setup (green), as well as the pn-only box annuli setup (red). The bottom panel shows the residuals in unit of σ. Bottom: XMM-Newton S_X profiles of different sectors top and their relative differences bottom from circular annuli setup. The grey shaded areas are the 1σ confidence regions of the full azimuthal S_X.The brown vertical lines indicate the various radii.