  The CRESST experiment observes an unexplained excess of events at low
energies. In the current CRESST-III data-taking campaign we are operating
detector modules with different designs to narrow down the possible
explanations. In this work, we show first observations of the ongoing
measurement, focusing on the comparison of time, energy and temperature
dependence of the excess in several detectors. These exclude dark matter,
radioactive backgrounds and intrinsic sources related to the crystal bulk as a
major contribution.
