extend shutter
in https://gitlab.cern.ch/CLICdp/DAQs/h2m_lab/-/blob/main/trimming/config_noise_scans/tune0.cfg#L25 you set a shutter of 5clk. I would vote for using a much longer shutter so the 8bit TOT is really filled. This gives you much better statistics at the same measurement time.
Was suggested by Xavi in the H2M meeting today.
Noise scan should then show a plateau at 254cnt when scanning over the baseline.