Left panel: cumulative curve of the events taken from the XMM-Newton region around J1813 in the 2–12 keV energy band and the cuts described in Sect. 2 (we note that it is not background subtracted). The red area marks the quiescent state; the blue area marks the possible active, nonflaring “intermediate” state. Right panel: zoom of the EXTraS flux curve, shown in Fig. 1, with only the active part of the curve (T0+61500 s). The blue area is the same as in the left panel.