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(For each cluster all XIS instruments fitted simultaneously, allowing Oxygen column density of the contaminant to vary, see Tables 5 and 6 in Kettula et al., 2013)
Running XSPEC script do_mekalfit_simult_newcal_en.xcm performs the spectral fits and produces log files xis_simult_Y_3_6_am_circ_newcal_0520_nocontam_mekalfit_en.log and XSPEC session files of the best fits xis_simult_Y_3_6_am_circ_newcal_0520_nocontam_mekalfit_en.xcm, where Y is the cluster name.