Comparison of normalized pulse profiles of source V 0332+53 studied at different energy ranges in different stages during a flare period. The observations are in temporal order from left to right: observation with OBS ID = 80102002002 and a luminosity value of (1.24–1.74) × 10³⁸ erg s⁻¹ with a pulse profile type 2; observation with OBS ID = 80102002004 and a luminosity value of (5.7–9.5) × 10³⁷ erg s⁻¹ with a pulse profile type 0; observation with OBS ID = 80102002010 and a luminosity value of (5.3–14) × 10³⁶ erg s⁻¹ with a pulse profile type 2. The measured profiles are represented by solid lines, whereas the Fourier fits are represented by dashed lines. The boundaries of the energy ranges are [0.5, 3, 6, 12, 15, 27.6, and 78] keV. The pulse profiles were shifted by hand to align the minima of the pulse profiles and coloured according to their respective pulse profile types in order to better show a comparison between them.