From what I see in the graph it seems like its far from off. How can it be off and connect to a cellular network and to google play services? Check at what time the screen is on. A few senarios (it may also be a combination of them):
1)The power off schedule is glitched and doesnt turn the device off.
2)You have set the device to try to connect to 2g or 3g network instead of 4g. This may seem to save power, but if the signal it recieves is too low, it may waste more power while connected to the network.
3)The phone reboots itself for some reason during night.
4)The graph has an issue. Look, it consumed about 20% and around 10% was the cellular network, which says it was around 9mah. So, if 10% translates to 9mah then your phone has a battery of about 90mah, which seems impossible
. Check the battery with another app too, like
gsm battery monitor.