have you got admission with this rank because the cutoff was very low for sikh miniority students

According to the previous year cutoff for GTBIT for sikh minority students the you have negligible chances of getting a seat in this college because for getting a seat in this college Sikh minority student need a minimum of  30000 and since your rank is much more than this you can't get a seat in this college.
TO predict the list of colleges where you can get a seat on the basis of your JEE MAINS rank , use JEE MAINS college predictor tool:

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer