Generic noise model for AIA 1700 (panels a and c) and IRIS SJI 1400 (panels b and d). The FFT power spectrum (black line), time averaged wavelet spectrum (red line), and fitted noise model (green line) are shown in each panel. Local and global 95% confidence levels with fitted noise are shown in blue and pink, respectively. The parameters used for the fits are also provided. The low χ² values justify the reliability of the fitted noise model on the FFT power spectrum.