"Information Literacy" means... what?
To be information literate, a person must be able to recognize when information is needed and have the ability to locate, evaluate, and use effectively the needed information. -- American Library Association
Critical Reading: is a form of language analysis that does not take the given text at face value, but involve a deeper examination of the claims put forth as well as the supporting points and possible counterarguments. (Wikipedia, Critical Reading)
Critical reading is different, because you are not only looking for information, but you are using your judgement to decide if the author has provided enough evidence for you to agree with his/her point of view. It is active reading; you are asking questions of the text.