You can reset it by unplugging the power, when the modem goes off that means there is usually an issue with the signal going to the mode,. DS is downstream the Other us the upstream.
If it happens at the same time, its one of these following, they have a maintenance window at that time, something turns on at that time, that causes interference, or you don't notice it when it happens at other times. I would call them wen its off, I'm sure your Receive is out of specification for the modem. If trouble calls/service calls are free I would request one. they can use meters to read the RF strength and find the issue.
I was a cable guy for many a years, modems and cable are burned into my brain forever.