Top panel shows counts spectrum as observed from LAXPC10 for the orbit number 2363, fitted with a model consisting of a disk blackbody, thermal Comptonization and a broad iron line. Resultant model spectra is shown by the red line, while the thick blue line represents the expected background level. The bottom panel shows the residuals, which may be due to systematic errors in the response function. The spectrum provides a good fit of ﹩{\chi }^{2}/\mathrm{dof}=278/284﹩ when a 1.5% systematics are added and the background uncertainty is taken to be 4%.