Top: background-subtracted pulse profiles of 1E 1547.0–5408 extracted over the 3–25 keV energy range from the combined NuSTAR FPMA and FPMB data sets, and separately for both observations. The vertical black solid lines mark the phase intervals adopted to extract the phase-resolved spectra. Middle: pulse profiles extracted in selected energy ranges. The profiles have been shifted along the vertical axis for plotting purpose. The vertical dashed lines mark the phase of the pulse peak in the soft X-ray energy bands (up to 10 keV). All pulse profiles in the top and middle panels are sampled in 10 phase bins, and two phase cycles are shown. For display purposes, the 2016 pulse profiles have been phase-aligned to the 2019 ones. Bottom: pulse phase (top) and pulsed fraction (bottom) as a function of energy at both epochs.