1. There is no way to access CPS account statement through online. 
  2. But the Office of the Principal Accountant General(Accounts & Entitlements), Tamil Nadu is generating and dispatching annual account statement(AAS)for all the account holders,to respective DDO's (Drawing and Disbursing Officer) every year after closure of accounts.
        To get the AAS Please send the request letter mentioning CPS Index Number, Name with initial,DOB,DOJ of the account holder to
Office of the Principal Accountant General
(Accounts & Entitlements), Tamil Nadu
361 Anna Salai
Chennai - 600 018
               If you find Missing credits in AAS send details
such as Head of Account ,Month of Transaction,Name of treasury,Sub Account, Voucher No and forwarded through the concerned Treasury officer