Total number of detections counter is possibly including duplicate images.

[mFulton07]

Using this object as an example: https://psweb.mp.qub.ac.uk/sne/atlas4/candidate/1001839990134856400/

It appears the "Number Of Detections" counter at the top of the web pages is including duplicate images/detections in its count for some objects.

This object was flagged on MJD 59584, during which there were only four detections in the magnitude plots, but the counter says there were nine detections in total. At the bottom of the page, there were nine rows of detections.