how to good are Quant. sectionals ? cat level ? above cat level ? below cat level ?

It's at par with the CAT level because as per the latest trend, IIMs are deliberately making the Quant section a bit easier to give preference to nonengineers.

below cat level imo

Easier side. Mocks are at par CAT level.

cat 2017 quant level(easy side basically)

cat level

Above cat level imo