The 14-year-old from Bangalore, whose first name means "boundless", carded an opening 69 to join Italian Stefania Croce and Becky Brewerton of Wales at the top of the leaderboard.
Ashok carded five birdies and two bogeys to finish three under par at the DLF Golf and Country Club in Gurgaon, near New Delhi.
The highlight of Brewerton's round was an eagle on the par-five sixth and she was five under par after 15 holes, but then dropped two shots in her last three.
"I'm happy and it's nice to be up there after round one," said Brewerton, who is targeting her third LET title and first since the Spanish Open in 2009.
"A lot of rounds this year I've struggled so it's nice to be up there again.
"I started off pretty average, parred the first few and then I eagled six, got on in two and made quite a long putt there, so obviously that kicked me on a bit."
Speaking after her round Ashok told www.ladieseuropeantour.com: "I won a professional event last year so I think that's given me some of the experience I needed to play well today.
"I gave myself a lot of birdie opportunities. I have a good short game and it went well today. My approach shots were also good.
"I am happy to be there on top along with such experienced pros but I am not going to get ahead of myself. I know things can change very quickly."