Revised return after intimation u/s 143(!) and after time li

Hi All,

I filled my IT reutn for FY 2010-11 beofre due date. Now in March 2013, I received notice u/s 143(!) for 1000/- tax demand. while checking details on 26AS, I found that by mistake I did not considered TDS of Rs. 24K. Time limit to file revised return is already over (31.03.2013) Now what to do. I request u all experts to comment as soon as possible. Thanks in advance.