Pulse profile map illustrating the energy dependence of the pulse profiles. The upper plot corresponds to the first NuSTAR observation and the corresponding NICER data, similarly for the second observation. The same data is used as for Fig. 6. Dashed, black lines indicate the transition between NICER and NuSTAR data. To the right, the pulsed fraction (PF) is plotted as a function of energy; blue is for NuSTAR data and in orange is for NICER. We defined the PF as PF = (p_max−p_min)/(p_max+p_min).