Not just ratifying.... For example, it has ratified the International Covenant on Civil and Political Rights. The fact is that for over 20 years it has neglected its obligations and reporting requirements under the ICCPR, so just signing it is not enough. There has to be a demonstrable adherence to those norms. What we're talking about is routine torture.
I have an article from December 2021 by a Dr. N.C. Asthana, former director general of police from India, who writes that “torture and fake encounters came to be regarded as...in 'national interest', [and] rewarded with medals” where people are accused of being separatists.
This is a serious problem, and just ratifying a treat is not enough. You have to demonstrate that you're following those obligations.