I just had my system activated, too. PTO was yesterday. Today was the first full day of generation and, even though no one was home, I noticed consumption power was jumping around in the Tesla app for the few times I checked, somewhat in relation to the generation power even though no one was home and the house would have been at it's baseline.
I put a call into their Tech Support line to see if there was an issue with the Power Blaster they installed (CTs were reversed or something) or maybe a configuration in their gateway to adjust but, since their systems still show me in "Utility Inspection", I need to wait for the activation to properly go through on their side which apparently will take a few days.
I also have a Neurio in my main panel and have been seeing the consumption and generation data even more closely aligned but am working with their support team to hopefully figure it out. My Neurio data seems a bit more extreme than the Tesla app had been showing with the real time power data.
Once I can get into the PowerGuide on MySolarCity.com, I can confirm where a problem may exist. SCE seems to take a few days to show their usage data so, by then hopefully Tesla will finally show my system as active and I'll be able to compare what I captured today against Tesla and Neurio soon enough.