Period detection completeness and contamination levels for a mix of periodic synthetic light curves, with periods between 0.2 and 45 days and amplitudes between 0.015 and 1.5 mag. Upper left panel shows P_in × P_out diagram with every synthetic light curve shown as a gray dot, recovered sample periods shown in green, and selected sample periods shown in blue. Harmonic paths are shown as blue dotted line, and 1 day aliasing (cf. Eq. (5)) paths are shown as dashed black lines. Bottom plots: completeness distributions per magnitude (left), amplitude (medium), and period (right) bins. Top: given the selected sample, contamination levels are shown per amplitude (middle) and period (right) bins. Fraction of true recovers are shown as empty bars, and fraction of contamination are shown as filled gray bars.