0.3−10 keV light curves of CDF-S XT1 and XT2 in luminosity units (marked in red). Also shown are the X-ray afterglow light curves of 64 LGRBs plus 32 SGRBs (Bernardini et al. 2012; Lü et al. 2015), as well as several individual transients are overplotted: the shock-breakout supernova XRF 080109-SN 2008D (cyan line, 27 Mpc), the X-ray flashes XRF 060218-SN 2006aj (blue line, 145 Mpc) and XRF 100316D-SN 2010bh (green line, 263 Mpc; Barniol Duran et al. 2015; Starling et al. 2011; Modjaz et al. 2009; Evans et al. 2007, 2009; Soderberg et al. 2008; Campana et al. 2006), and the relativistically beamed TDE Swift J1644+57 (black line, z = 0.3543; Bloom et al. 2011; Levan et al. 2011). The reference time for both FXTs is the arrival time of the first photon to the detector, while for GRBs, Swift J1644+57, and X-ray flashes their reference time are based on their initial gamma-ray detections.