What is consciousness, and what unique non-tautological properties does it give us? I know of the general idea of consciousness, but I can’t boil it down to fi

What is consciousness, and what unique non-tautological properties does it give us? I know of the general idea of consciousness, but I can’t boil it down to first principles. Self-awareness, on the other hand, is more tangible. AI would seem capable of internal cognition, reflection on past experiences, etc...They might not have the desire or need for such reflection, but they would certainly have the ability.