S. 153A : Assessment-Search or requisition-Warrant of Authorisation-Panchnama-No search against the assessee-Panchanama reflected the name of the assessee-Panchnama cannot be treated as warrant of authorisation — Assessment order is quashed as without jurisdiction-Existence of alternative remedy — Not bar to entertainment of writ petition where challenge is to jurisdiction exercised by Authority and interpretation of statutory provisions involved [S. 132,153D, Art. 226]