T V Jayan and G S Mudur have a long article in The Telegraph discussing various instances of fraud in Indian science. I am one of those quoted (for the most part accurately) thanks to my involvement in the Kundu case.
I think the essential point, that they have brought out well, is the reluctance of our scientific establishment to deal with such matters or even acknowledge that they exist. The article quotes R Chidambaram as telling the journal Science that the number of cases of fraud in India is too small to justify a full-time oversight body. I'd say that, taken as a proportion of the research from the country published in top-tier journals (which is pathetically low even compared to other Asian countries), the number of cases in India is probably among the highest in the world -- and it's thanks to the attitude of our science administrators, which is either ostrich-like or deliberately condoning of such things.