A bit more detail -- this paper is quite an easy read, and uses data from various sources to quantify the effect of fire and damage on the building. One of those sources -- referred to as "a virtual reality project" -- involved measuring the building in vast detail for Assassin's Creed. That data is now being used to help rebuild it, and the devs have fiscally helped as well [1].
[1] https://www.theguardian.com/games/2019/apr/17/assassins-cree...