Effect of ADC non-linearities on time-ordered data of one 44 GHz diode. The upper plot shows the recorded detector voltages for sky (red) and reference (blue). Voltage ranges affected by ADC non-linearities are marked by horizontal dotted lines. Time ranges affected are marked by vertical dashed lines. The lower plot shows the percentage variation of the inverse of the gain factor from the dipole gain (green) and the “white noise” estimates on the sky and reference voltages (sky red, reference blue). The gain estimates have been smoothed by a three-day moving mean, the noise by a one-day moving mean.