Extraction regions we adopted in the analysis. The source and background regions are centered at right ascension 104.951117 deg and declination +14.239175 deg. The exclusion zones of contaminants are shown as cyan circles with a red bar. Left. source extraction radius (yellow) of 150″ (TM2; 0.2–10 keV). Right. background annulus (magenta) has inner and outer radii 10′ and 15′, respectively (TM6; 0.2–10 keV).