X-ray flux (1−100 Å; count s⁻¹; solid black line) plotted for selected snapshot observations together with the X-ray average over all observations. The optical count rate is plotted as a dashed black line. Colored lines (see the color bar at the top panel) indicate light curves in different energy bands, obtained by integrating the spectral fluxes. No axis labels or ticks are displayed for these, as they are plotted only for qualitative comparison. Limits are set to (0.8 × min, 1.2 × max) separately for each band.