Does the following make sense to you?
I'd expect the graph to stop at 200. I didn't earn 1154 rep that day, nor did I lose 1317 rep the other day.
I think the graph algo needs change.
Update the graph looks currently less weird as the deleted votes don't spike out that high, however the earned votes are still incorrect. I earned approximately 200 reputation each day until the question got deleted. I didn't earn 1140 in one day.