Qualification of the Phase I Readout Chip
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The redesigned readout chip (ROC) is a key component of the Phase I Pixel Detector Upgrade, and its functionality, operational reliability, and performance are of paramount importance. The characteristics of every design iteration of the chip have been thoroughly tested at the DESY-II Test Beam Facility using the Datura beam telescope as tracking reference. The tests provided valuable feedback to the chip designers and allowed to promptly identify design flaws and unexpected issues which were subsequently corrected for the final chip revision.