Dear Manugupta :
I understand your point of concern as, if TCS makes verification with yours ex-employer, and traces that you have intentionally quoted less CTC, whether you will be in trouble.
My answer : TCS will certainly have a doubt that with a view to grab the job, employee has misquoted the ctc on lower side. In case TCS becomes aware that even your job was not secure, with previous employer (as written by you), this will make their feelings stronger that you intentionally quoted less ctc.
You are ready to accept TCS present offer, but you are worried whether TCS will allow you to continue, if they smell something fishy !!
Circumstances, mentioned by Mr Rajkumar are 100 percent truth, why one accepts less salary while changing the job. (TCS people also are aware of all these things).
Anyway, as you say, you yourself have already submitted your Payslips to TCS, this is a good thing you have done. If at all verification is done, atlast your monthly salary will match, with the response of TCS.
Ofcourse, Monthly salary X 12 IS NOT CTC. Provide some documentary evidence showing your actual CTC with previous employer to TCS, and convince/explain orally, that nothing was done intentionally, it was a mistake.
If at all, they really have opinion that you are a Good person, and nothing is done with malafide intention, you may be successful in getting whatever you desire. Otherwise, looking at your current job insecurity, whatever you are presently offered, must be excellent for you.
Though the issue raised by you, may be giving you tension, Don’t worry, you are not in great fault. And I don’t think anybody will look into such matters very seriously. Relax..
All the Best,