Ignore power pulsing headers for all detectors, except the DUT. Previously this was the other way around, so that data from telescope planes was not read after a corrupt header 0x0. This affected many runs in the November 2018 test-beam data taking. Note that the power-pulsing code is probably anyway outdated, as Estel used a different branch.
requested to merge dannheim/corryvreckan:dannheim-bugfix-EventLoaderTimepix3 into master