Rate as a function of the absolute magnitude in W1 and redshift. The light blue histogram shows the total number of galaxies in the parent galaxy sample and the green one is the host of our flare sample. The black hatched bars represent flares with L_bol,peak < 6 × 10⁴³ erg. The grey data points and black errors show the rate as calculated with Eq. (12). The grey triangles are the 90% upper limit on the rate where no flare was observed. The errors are statistical only.