I do have a qualia for perceiving whether someone else is present in a meditation or is absent minded. It could be that it's some mental reactions that picks up microgestures or some other thing that I don't consciously perceive and summarizes that information into a qualia for mental presence.

Investigating how such a qualia works is what I would do personally when I would want to investigate consciousness.

But you probably have no such qualia, so you either need someone who has or develop it yourself. In both cases that probably means seeking a good meditation teacher.

It's a difficult subject to talk about in a medium like this where people who are into a spiritual framework that has some model of what conscious happens to be have phenomenological primitives that the audience I'm addressing doesn't have. In my experience most of the people who I consider capable in that regard are very unwilling to talk about details with people who don't have phenomenological primitives to make sense of them. Instead of answering a question directly a Zen teacher might give you a koan and tell you to come back in a month when you build the phenomenological primitives to understand it, expect that he doesn't tell you about phenomenological primitives.