Its a company where only Tamilians can work and grow, no body will support you if you are not a tamilian, never join CTS if you are not a tamilian, all the top management and even middle level management are tamilians, you can easily feel the discrimination.
I am not against tamils so please dont mind, but its not good to support someone just because he is from your region. If you are not a tamilian, at the time of appraisal you will have to see nobody else also in your team is tamilian, if there then forget about your chance, you will have to struggle a lot, there is no meaning of performance in CTS, the performance is already defined, you are Tamilian or not.