IBIS/ISGRI (18−80 keV) normalized pulse profiles obtained with the timing solution resulting from our phase-connection analysis. Each panel represents, from top to bottom, the successive INTEGRAL observations (from Rev# 1131 to 1138, shown in the top left corner). In the top right corner, the luminosity of the source (3−80 keV) in units of 10³⁷ erg/s is reported. The thin straight line around phase 1.0 at the bottom of each panel (except Rev# 1138) approximately indicates the phase range where the sharp features used to phase-connect the observations are found.