I paid the self assessment tax for this finalcial year , but it is not refelcting in the it website

Thanks for the reply . Hope within 3 days it will reflect in IT site ?

Your tax payment will be reflected in Form 26AS within 3-4 days from the date of payment. 

If you have the tax payment challan details (either from netbanking mode of payment or from bank mode of payment), you can go ahead and file your income tax returns by filling in the details of tax payment (BSR Code of the bank, Bank name, date of tax deposit and Amount of tax) in self assessment tax column.