Observed source spectrum (black = MOS1; red = MOS2; green = pn) with APEC best-fit model reported. The spectra of the different cameras and observations were fit jointly, but the results of a single ObsID (0923400401) were reported for clarity. For energy ranges 1.2−1.9 keV (for the MOS detectors) and 1.2−1.7 keV and 7−9.2 keV (for the pn detector) were excluded during the fit. Each spectral bin was re-binned to a minimum significance of 5σ for visualization purposes. Residuals in the pn spectrum at 2.1 keV are instrumental (Au lines; Leccardi & Molendi 2008).