with 904 marks in 10+2 and 53 percentile in jee mains. can i get into sastra university

Yes, since you meet the eligibility criteria of Class 12 with at least 50% marks and a valid score in JEE Main, you can apply for BTech admission at Sastra University. The university offers BTech degrees in 13 specialisations. Some of them are CSE, Aerospace Engineering, Chemical Engineering, Bioinformatics etc. The duration of BTech courses is four years and annual fee is Rs 1,50,000-6,00,000 (varies as per specialisation). Sastra University offers BTech degree in full-time mode.