I had filed e-return for AY 2010-11 on 30-03-2011 for which i recived mail from CPC as follows

"

Please find attached the Income tax Intimation U/S 143(1) for PAN xxxxxxxxxx with respect to the return of income filed by you for the Assessment Year 2010-11.

In case of variance of Rs. 100 or more, between Tax Credits (TDS/TCS/Advance Tax/Self Assessment Tax) as claimed by you in the Return of Income and the computation under Sec.143(1) per attached Intimation, a separate email will be sent to you providing details on the same.

"

and in attachment got copy of tax computation in which both columns are same

means as provided by tax payer and as computed under section 143(1)

tax liability is also NIL

Should i need to reply ITO for same ?

or i should kept it as it is 

as they had not mentioned any tax liability for me

it works as assesment order or not ?