Congratulations on securing a good rank and score in GATE 2023!
Based on your GATE score and rank, you have a decent chance of getting admission in some of the top IITs for postgraduate programs.
However, admission to IITs depends on various factors such as the number of seats available, the number of applicants, the cutoff for that particular year, and your category.
For more details refer to Cutoffs for Masters GATE CSE at https://gatecse.in/cut-off-for-masters-admissions/