Hi, I have 48.9875721 percentile in JEE session 1, can I get admission in G L Bajaj for in B.Tech CSE or IT?

First of all congratulation dear whatever you have scored. But, according to my view you should focus on next attempt to do much better. While it isn't enough to grab good colleges.

Need atleast 55% in JEE for B.Tech.

No atleast you need to qualify cutoff.

Direct admission is available in GL Bajaj but you need to contact to the officials to know the procedure.