If all traffic is from search engines then its really good. Look at your ads placement you may get better number of clicks
15 clicks only with 2K impressions? kinda low. it might not be due to ad placement. suggest u monitor it for a few days or a week to see if this still persist.
Check to see where the visitors are coming from. Could you site have ended up on one of those rotating site lists or something dumb like that?
Good? You're joking, right? 2000 impressions and 15 clicks it's good? Nop, that's awfull. Something is definitly wrong: maybe traffic is not so good (games/video/etc) or the ad placement is not correct... just maybe. But 2000 impressions/day should convert at least some 200 clicks (10% CTR)
If it is your indian medicines blog, the first problem I see, is when I first go to your page, I don't see any ads without scrolling down. If you check out the third link in my signature, the one about education, and go to that site, you are hit up side the head with ads. (If you go to my site DON'T click my ads!!!) Make your header image about a third the size it is so your ads will be above the fold. if that is not the site in question, then post the link so we can check it out. Edit: I had to remove my site from the sig because naturally someone clicked my ad.
This is not too low but quite low Your CTR is at around .7%. Change the layout, color scheme, etc. Aim at getting at least 5% CTR.