You can set the DT histogram profile to rec2020…
Yep as I clarified a couple of comments above… I have meant linear when I said that… I had not originally said that explicitly as "linear: rec2020 as it is the only profile provided in that color space by default unless you go out and add a gamma version of rec2020 yourself… so I think it was pretty clear and not sure what your screen shot adds unless I am missing something??
Sorry, I misunderstood your comment. I thought that rec2020 was a short hand version of the name linear rec2020 rgb
No need to be sorry. I was not clear initially and indeed used rec2020 as a reference to that profile which in DT is linear.