Hi Vanathi Kumaran !

I am sharing the previous year qualifying cutoff of Civil Engineering with you. You can use to estimate the cutoff for this year. IIT Guwahati, the exam conducting body of GATE 2018 will release the qualifying cutoff of this year along with the result on March 17. Till then, you can refer to the qualifying cutoff of 2017 as given below.

You can track the result and qualifying cutoff of GATE 2018 from the link given below: 

https://engineering.careers360.com/articles/gate-cutoff

All the best!