Hello Aspirant! ECE (Stream 2) at SASTRA University (Thanjavur) is a moderate to low possibility based on a JEE Main percentile of 51 and a Tamil Nadu Board Percentage of 93%; depending on the year and the trends in competition and cutoffs.

SASTRA gives 25% weightage to JEE Main and 75% weightage to board marks under Stream 2. You have a good board mark but a relatively low JEE percentile which is going to affect the composite score.