Left panel: gain in TS by adding a flare to a constant vs. the p-value associated with a constant model for 500 s bin light curves. The two lines indicate a threshold of p-value = 10⁻⁶ in both axes: the blue points are light curves that are overall compatible with a constant model, but for which a flare improves the fit significantly. Right panel: histogram of the number of bins for the light curves, colour-coded as in the left panel (area of histograms normalised to unity; all bar items start from the baseline).