am I rooted or not? topic

I’m Running Katkiss 5.0 14b nice and smooth on my TF201. I unlock it , flashed Gapps, compatibility pack and SU but I noticed that after SU the tablet reboot itself every 5-10 min.

How I solve it? Kill the SU app.

I downloaded root checker and says its rooted, but with another apk says is not.

So how can I really know if my tablet was rooted or not?
Thanks!