Hello Nithesh, please check out the following link for detailed info on CSAB special round cutoff https://engineering.careers360.com/articles/csab-special-round-for-nits-iiits-and-gftis

With your rank of 165137 and SC category, you can get the following colleges through CSAB special round:

• NIT jalandhar: chemical, biotech, civil
• NIT Jaipur: electrical, ECE, metallurgy, 
• NIT Bhopal: chemical, metallurgy, 
• NIT Agartala: chemical, EE, ECE, Mech, bio engineering
• NIT calicut: biotechnology