Reports the value of sysUpTime at the most recent point when any counter in this downstream OFDM profile's statistics entry experienced a discontinuity (such as a reset); it reads zero if no discontinuity has occurred since the local management subsystem last reinitialized. Admins should check this timestamp before trusting a sudden drop or jump in any of the profile's codeword or octet counters, since it flags a reset rather than an actual traffic or error event.