Didn't downvote, but disagree with your assumption about 'lack of sterilization'. The official word from ISRO is that they comply with 'planetary protection' requirements.
"ISRO said the spacecraft was built according to the planetary protection implementation requirements specified for ‘orbiter’ category of missions."
Some articles speculate about the rigorousness but can't confirm. Implying it doesn't exceed them doesn't equate to skipping the sterilization. Besides, it's carrying satellites from developed countries (France, Germany, Canada & Singapore), which I doubt would be complicit in creating an international controversy.
"ISRO said the spacecraft was built according to the planetary protection implementation requirements specified for ‘orbiter’ category of missions."
SOURCE : http://www.business-standard.com/article/current-affairs/mom...
Some articles speculate about the rigorousness but can't confirm. Implying it doesn't exceed them doesn't equate to skipping the sterilization. Besides, it's carrying satellites from developed countries (France, Germany, Canada & Singapore), which I doubt would be complicit in creating an international controversy.