I honestly don't understand what your problem seems to be. You post screenshots of your battery stats often with the claims that the battery drain is too high (OK, not this time, but I assume since you expected a question on logs, it was asking for what was sucking up all your juice).
Look, you've got 4 hours of constant screen on time, with still some juice remaining on a 3000mAh battery, with WiFi and mobile data on. You don't seem to have given the phone a break. That's rather great for your device.
The reason Android system is probably still on top after a while of the latest release (4.15), is because there's enough and more of under-the-hood optimization going on in the system. Leave the phone be for a week, let everything settle down, and then, use the phone normally. If it lasts for a day (always has for me after a week or so of flashing a new ROM), then great, don't you think?
What more do you seem to need?