Unabsorbed total energy vs. unabsorbed peak luminosity of the X-ray flares (adapted from Mossoux et al. 2015a). The top x-axis is the unabsorbed fluence. The crosses represent the X-ray flares from the Chandra XVP campaign (Neilsen et al. 2013), the triangles are the two brightest flares seen with XMM-Newton (Porquet et al. 2003, 2008), the diamond and the two squares are the 2011 March 30 flare and its subflares, respectively (Mossoux et al. 2015a). The empty circles are X-ray flares 1 and 2 of this work with their 1σ error bars. The filled circles are the components 1a and 1b of flare 1 (see Sect. 4.1.2).