Background-subtracted, vignetting corrected and mosaicked count-rate image in the 0.3–2.5 keV energy range. Circles mark the sources identified by the edetect_chain tool. Dashed circle, SRC 1, is the Calvera pulsar; yellow circles identify sources having a NED counterpart; cyan circle mark the sources with a PanSTARRS counterpart; and white circles are regions with no known counterpart in the considered catalogs. The green dashed lines and crosses mark the Chandra FoV and detected sources, respectively.