Certainly not normal - CTR = 120% ish. If you have a new AdSense account you are likely to attract the attention of AdSense with stats like that. To be on the safe side I would install some sort of click tracker (Adlogger) and email AdSense advising them you've got a problem. You might also like to read about preserving your AdSense account.
Yes, itss abnormal. Se how it goes from here on in. If the same happens I would shoot off an remail to the adsense team rightaway.