Log of outages?

I recently implemented a UDR7 with 2 U7 Mesh APs at my home. We have a glitchy electrical supply and I think this is causing brief power outages ( a few seconds ) that are causing the system to reboot.

The UniFi app does not appear to log any of this, so I have no history. Is there any way to get it to do this?

Thanks

( and, yes, I am looking into UPS solutions)