Detailed calibration of the PI-LCX:1300 high performance single photon counting hard x-ray CCD camera
Hong Wei, Wen Xian-Lun, Wei Lai, Zhu Bin, Wu Yu-Chi, Dong Ke-Gong, Jiao Chun-Ye, Wu Bo, He Ying-Ling, Zhang Fa-Qiang, Zhou Wei-Min, Gu Yu-Qiu
       

(color online) Comparison between the calibrated detection efficiencies from the XOP calculation and data from the manual. The anomalously high detection efficiency of the 155Ba at 4.54 keV is due to the strong noise excited by high energy γ rays.