How can you have: 1. How can you have a click on a website in Google Adsense on Sunday and the Google Analytics shows "0" visitors for that day. (I know it is a new site, no teasing) 2. How can you have 0 impressions and 2 clicks in Adsense? these are facts.
Few reasons 1) AdSense displayed on another website/page (someone stole your web page source code and forgot/didnt know how/why to remove the javascript code) 2) Adsense or Analytics error 3) Someone (a malicious robot perhaps) attempted to enter the URL from google adsense links on your site DIRECTLY into the browser 4) many more reasons....
One of the possible reasons may be that the analytics data may be delayed. If you check the data now, do you still see 0 impressions?
OK, so it is difficult to find the reason. However, when you will get decent traffic you will not care about such stats