Azimuthal-correlation distributions of electrons from heavy-flavor hadron decays and charged particles before baseline subtraction for $4 \pt^{\rm e} 12$ \GeVc and different associated \pt intervals, for the central (0--10\%, top panels) and semicentral (30--50\%, bottom panels) Pb--Pb collisions at $\sqrt{s_{\rm{NN}}} = 5.02$ TeV. The distributions are fitted with a von Mises function to describe the NS peak (solid gray line) and a baseline function which includes a constant term and $v_{\rm{n}}$ modulations (solid black curve). The statistical (uncorrelated systematic) uncertainties are shown as vertical lines (filled boxes). The uncertainties on the baseline are shown with a red band.