You have to little more about 600onwards to get an IIT dhanbad

As per your score and previous year cutoff, the colleges you get in first round are:-

IIT Bombay Centre of Studies in Resources Engineering Geoinformatics and Natural Resources Engineering

IIT Kharagpur Agricultural and Food Engineering Food Processing Engineering

IIT Kharagpur Agricultural and Food Engineering Land and Water Resource Engineering

IIT Bombay Centre for Technology Alternative for Rural Areas Technology and Development

IIT Ropar Center for Biomedical Engineering Biomedical Engineering

IIT Kharagpur Agricultural and Food Engineering Agricultural Systems and Management

You can also use careers360 college predictor to know more about colleges you get as per your score.

https://engineering.careers360.com/gate-college-predictor