IXPE 2–8 keV light curve in 200 s time bins (top panel). Type I X-ray bursts are easily recognized. PD (middle panel) and PA (bottom panel) of the total (i.e., persistent and bursting) emission measured in the 3–6 keV band and evaluated over ∼2 d long intervals. The blue shaded region indicates the interval after the increase in the pulse amplitude that was observed at MJD 60 376.5, in which a 90% c.l. upper limit on the PD is reported.