Hello Sudarshan. You mentioned  your AIR in NEET PG is 42312  but you mentioned you belong to ST category.

Based on your performance in NEET PG 2021, it is less likely for you to get admission to MD General Medicine at most of the top-rated institutes. However you have good chances to grab a seat for MD Community Medicine at various medical colleges such as:

Public/Government Institutes:

1. GMCH Chandigarh (2019 Cutoff - 42742)
2. KGMU - King George's Medical University (2019 Cutoff - 43068)
3. Topiwala National Medical College, Mumbai (2019 Cutoff - 43712)
4. Grant Medical College (2019 Cutoff - 55393)

and  more...

Private Institutes:

1. R.G. Kar Medical College and Hospital, Kolkata (2020 Cutoff -43,983)
2. All India Institute of Hygiene and Public Health, Kolkata (2018 Cutoff - 52754)

Please note, this prediction has been made based on previous years' cutoff details and may be subjected to vary from actual results.

To check your chances in 50% All India, 50% State Quota Govt Seats & Private Seats, Central & Deemed Universities for your Home State, Seat type, Caste, etc. and to get a NEET PG Counseling personalised report with Top MD/ MS/ Diploma Colleges in All India & State Level Counsellings, I encourage you to use NEET PG 2021 College Predictor:

https://medicine.careers360.com/neet-pg-college-predictor?utm_source=qna&utm_medium=neet_pg_cp

I hope you find the information useful.

Thank you and all the best!