BUDS throttle position sensor query

Hello.  I had some BUDS analysis done recently on my 915iS and it was showing that when my aircraft throttle was fully closed, it showed on the BUDS software as being Throttle at 25%.   Screenshot attached for reference.

Does this sound correct?  I understand the aircraft needs to have some idle RPM, but maybe Throttle at 0% means Idle?

Many thanks.

Paul.