Example for our flare detection and validation procedure. Left and right plots: short- and long-cadence data, respectively. Top: observed and smoothed original (black dashed) LC. Middle: flattened LC (without rotational signal). Bottom: zoom on the first flare candidate from the panels above. All relevant parameters for the flare validation are also shown: t_peak is the time of the flare maximum, Δt_rise is the duration of the rise phase, Δt_decay is the duration of the decay phase, F_peak∕F_last is the flux ratio between the flare maximum and the last flare point (for long-cadence data, F_last is defined as the flux of the first point after the flare). The red solid line is the best-fitting flare template following Davenport et al. (2014).