Demonstration of the fitting and detrending steps. The raw CHEOPS light curves of HD 95338b are shown in the top row, along with the initially fitted transit curves (step 1). The residuals of the initial transit fit, along with the best-fit systematics model is shown in the second row, with N number of harmonics of the roll angle included. The final transit fit (step 4) and its residuals (later used in the search for additional transits) are shown in the bottom two rows, where the full white circles represent 200-point bins (with an average uncertainty of ≈20 ppm in each bin).