H264 profile-iop explained

Can you clarify your question? What exactly don't you understand? You have already parsed 42801e as Constrained Baseline Profile Level 3.0.

Constrained Baseline Profile identified by constraint_set0_flag=1 mean that encoded stream don't use any of the features outside of this profile (like FMO or ASO from wikipedia table) and so can be decoded with any decoder with support of Constrained Baseline, Main or High profiles. Streams encoded with Baseline Profile (not Constrained) Profile can use this additional features (or not use but still not be indicated as Constrained) but if they will be used in stream than decoders which support only Constrained Baseline, Main or High profiles wouldn't be able to decode it.

Update

I was wrong. It is Baseline Profile Level 3.0 because constraint_set1_flag=0 and so there is no indication of Constrained Baseline Profile.