Hi Himanshu,
I'm sorry to hear that Test Day did not go better. GMAC has publicly stated that the Official Score that you earn on Test Day is within +/- 30 points of actual ability. Assuming a similar 'swing' in how your CATs function, most of your CAT/mock score results - along with your 2 Official Scores - show that you essentially performed the same each time (about 660 +/- a few points). You handle certain aspects of the GMAT consistently well, but you also make certain consistent mistakes.
Since these data points go back 2 YEARS, it's likely that you have developed some 'bad habits' that are keeping you from scoring higher (and will take time to fix - and replace with new 'good habits'). Raising a 660 to the point that you can consistently score 750+ will likely require at least another 2 months of consistent, guided study - and you'll have to make significant improvements to how you handle BOTH the Quant and Verbal sections. Thankfully, the GMAT is a consistent, predictable Exam, so you CAN train to score at a higher level.
Before we discuss the data in your ESR, it would help if you could provide a bit more information on your timeline and your goals:
1) Going forward, how many hours are you planning to study each week?
2) What Schools are you planning to apply to during Round 2?
3) What is the minimum Score that you feel comfortable applying with?
GMAT assassins aren't born, they're made,
Rich