Defining personal data and anonymization in DPDP Act 2023

Hello folks,

I am trying to understand how does Digital Personal Data Protection Act defines personal data and anonymization of personal data. More specifically, when does personal data cease to be personal data. I tried looking into the act, but could not find any concrete answers to this question.

I am looking at from the lens of GDPR and hence it might not be a right question. Though if you have any insights into this would love to know.