Spectral fit for NuSTAR FPMA (magenta), NuSTAR FPMB (red) and NICER (blue) with model B.2. Top panel shows the unfolded spectra and bottom panel shows the data residuals. Although residuals indicate that this is not a perfectly fitted iron line, the reprocessed blackbody remain sufficient and consistent to fit the data from NICER along with NuSTAR. The fitted model parameters are presented in Table B.1. Data is rebinned using the command “setplot rebin 100 10” to present in the plot.