Left: exposure-corrected mosaic image in the energy band 0.2–1.0 keV. Marked sources are: cyan (XRBs and candidates), yellow (SNRs and candidates), red (SSSs and candidates). XRBs and candidates, for which a spectral analysis was performed, are additionally marked with a circle (see Sect. 3.2). Background sources with fitted spectra are marked with magenta circles. Right: exposure-corrected mosaic images of the XMM-Newton LP observations of the northern disc of M 31 in three colours (red: 0.2–1.0 keV, green: 1.0–2.0 keV, blue = 2.0–12.0 keV) with the footprints of the new Chandra survey and the PHAT survey shown by solid green line and dashed magenta line, respectively. All images are shown in log-scale.