As the exam pattern of the JEE Advance is changing every year so ,it is quite bot possible to predict anything precise about the marks. As IIT B  has only 2 seats available for pwd in CSE branch ( The rank under pwd category should be less than 5).   While you don't need a lot  of marks to get into IIT B, you do for pwd. Paper carries 372 marks out of which you should have to score marks between 200-250 for pwd to get a CS in IIT B.

Hope this will help you!