You can also look at certain columns in Cortex for info about your media, like File Type and Codec. It doesn’t say specifically XAVC, but it can be inferred from the file type (MXF), codec (AVC) and resolution (UHD).
But here’s a question - is it possible to have Cortex show all the metadata for the recorded clip? (even though it’s not editable) For example, in Sony’s RAW Viewer it shows that the clip is XAVC, but it also shows ISO/exposure, white balance, etc. I don’t see these columns in Cortex (at least not in 1.5.2 b5004)