  The ALICE detector is undergoing an upgrade for Run 3 at the LHC. A new Inner
Tracking System (ITS) is part of this upgrade. The upgraded ALICE ITS features
the ALPIDE, a Monolithic Active Pixel Sensor. Due to IC fabrication variations
and radiation damages, the threshold values for the ALPIDE chips in ITS need to
be measured and adjusted periodically to ensure the quality of data. The
calibration is implemented within the ALICE Online-Offline (O$^2$) Computing
System, thus it runs in the same framework as the normal operations. This paper
describes the concept and first implementation of the charge sensitivity
scanning procedures for the upgraded ALICE ITS in the ALICE O$^2$ System, and
demonstrates the first results of the scanning of the data taken from the
installed ITS.
