catalogues. These steps are described next.

  EPIC camera     soft (B) band   hard (CD) band
  ------------- --------------- ----------------
  MOS                       5.0             23.0
  pn                        1.5              7.9

  : Conversion factor CF from count rate to flux in units of 10$^{12}$ erg s$^{-1}$ cm$^{-2}$ for a rate of one count s$^{-1}$ . A photon-index power law with $\Gamma=1.7$ and a mean N$_H$ value of $2.6\times10^{20}$ cm$^{-2}$ are assumed. The two MOS cameras are assumed to be identical.[]{data-label="TabCF"}

### Band merging \[SecBandMerge\]

Band merging of detections in the soft and hard bands occurs in a 10 arcsec radius following the procedure used for XMM-LSS and described in detail in @2013MNRAS.429.1652C. A merged source can be classified (using a two-letter code, `P` for pointlike, `E` for extended, `-` for undetected, respectively in the soft and hard bands) as extended (and by definition non-spurious) if it is extended in both bands (`EE`) or in the single one where it is detected (`E-` and `-E`), or if it is extended in the soft band (`EP`). It is classified as pointlike in all the other cases (`PP`, `P-`, `-P`, and `PE`).\
Band merging acts on all detections in all pointings, including those considered as spurious (i.e. detection statistic <span style="font-variant:small-caps;">det\_stat$<$15</span> 