Intrinsic scatter of N_gal/N_rand vs. various systematics tracer variables (Table 1) as measured over 100 FLASK realisations with the KiDS-Bright survey parameters and footprint. Without any biases applied to the FLASK realisations, the blue (1σ) curves give half the difference between the 16th and 84th percentiles of the distribution of 100 individual N_gal/N_rand vs. systematics correlations. 2σ (orange) curves give half the difference between the 2.5th and 97.5th percentiles. Galaxy/random counts and mean systematics are taken in n_side = 256 pixels, about 14 arcmin in size.