This read-only display string records the timestamp of the last hood-removal event detected by the Smart Hood Sensor. It matters operationally as a physical-tamper log, letting an admin confirm whether and when the chassis cover was opened without needing to be physically present. For example, after an unexplained hardware change, security staff read cpqSiHoodRemovedTime and find it matches the exact time of a badge-access anomaly the night before.