It's explicit on the interception of any kind of data.

It defines message as:

  “message” means any sign, signal, writing, image, sound, video, data stream or intelligence or information intended for telecommunication;

And then it says that said "messages" can be "intercepted or detained or disclosed", for a really wide range of reasons, apparently without the intervention of a judge.

  24.4 On the occurrence of any public emergency or in the interest of the public safety, the Central Government or a State Government or any officer specially authorized in this behalf by the Central or a State Government, may, if satisfied that it is necessary or expedient to do so, in the interest of the sovereignty, integrity or security of India, friendly relations with foreign states, public order, or preventing incitement to an offence, for reasons to be recorded in writing, by order:

  (a) direct that any message or class of messages, to or from any person or class of persons, or relating to any particular subject, brought for transmission by, or transmitted or received by any telecommunication services or telecommunication network, shall not be transmitted, or shall be intercepted or detained or disclosed to the officer mentioned in such order;