I don't. I've seen this[1] passed around as an evidence to show a much lesser prevalence of caste-based discrimination, but I haven't myself examined this in depth.
> Muslims report the greatest degree of religious discrimination by far (39 percent), followed by Hindus (18 percent), Christians (15 percent), and believers of other faiths (9 percent). Sixteen percent of Indian Americans report being discriminated against by virtue of their Indian heritage. And, finally, 5 percent of all respondents report having encountered discrimination due to their caste identity.
Do you have a better source of data or survey results on caste based discrimination?