Manager views

I recently joined new company and my manager earlier said during interview x team but later put me in y team. Y team product is not good, but tech is ok. I came from better team so in 1:1 he keeps on asking whether i am happy with work or satisfied. I never show any such signals. I feel annoyed why he keeps on asking or is hebthinking that i am not performing well. How to know what is going on his mind? I heard in general he is very good manager.