Results from the full-mission timing analysis using best fits to the pulse profiles as described in Sect. 3.1. The top and bottom plots refer to the first and second XMM-Newton observations, respectively. Fermi-LAT counts were calculated using photon weights. XMM-Newton counts were normalized to 1, while Fermi-LAT counts were normalized to 2 for display purposes. Counts from the diffuse γ-ray background are not shown. Statistical error bars are included for both phaseograms. The dotted vertical lines indicate the best-fit locations of the X-ray peak and higher γ-ray peak.