Form number to be filed by individual non resident categaory

Hello. 

  I am Computer Eng. and woriking in Indian Company. For Job Assignment, I am outside India in F.Y.2014-15. I am getting part of Salary in India, and I am having Interest Income only. As Per Income Tax Act, I am NON RESIDENT.

       I have to file Income Tax Return for A.Y.2015-16.  Whether I should file return ITR-! or ITR-2 A.

Salary received outside inida, is taxable in US. So i am not disclosing the same in return.

Please inform ....

Shahkg