Fig. 3.
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Example light curve for a ZTF quasar in the r band. Grey points are the original flux measurements, while yellow stars indicate the binned-interpolated values turning each season into an evenly sampled time series to compute the high-frequency PSD in Sect. 3.1. The second half of the first season shows data points rejected from the analysis due to the quality cuts applied. Blue squares are yearly-binned points used for the low-frequency PSD in Sect. 3.2.
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