CoRoT light curves of CTTSs from 2011 showing different photometric variabilities. Panels a) and b) correspond to spot-like light curves, c) and d) to AA Tau-like light curves, e) is a non-periodic light curve caused by obscuration by circumstellar material, and f) is a non-periodic light curve dominated by accretion bursts. The light-curve magnitude was calibrated using the R filter with a zero point of 26.74 mag, as described in Cody et al. (2014).