Hello aasha,  NTSE cut offs get changes every year depending on various factors like number of students appeared for exam,  maximum marks achieve by student,  number of scholarships offered for this year and many more. But you can predict your chance of selection based on last year cut off. And as per the last year cut off students with more than 147 marks got selected for next stage of NTSE. so as per this it is quite difficult for you to get selected in next stage of NTSE.

but never loss hopes because I already mentioned that cut off get changes every year.  So be positive and wait till results.

I hope it will help you.

thanks.