Averaged flare profiles for two different time extensions (from −2 to 2 ks in the left panels, from −4 to 4 ks in the right panels). The three AGNs are compared to CV MV Lyr. The latter is shown in two different states: in a low (upper panels) and high (lower panels) state. The averaged number of the flares is summarised in Table 1. The thick black line shows the side lobe between −3.2 and −1 ks of IRAS 13224–3809, as discussed in the text.