Any Central Excise Officer who ceases or refuses to perform or withdraws himself from the duties of his office, unless he has obtained the express written permission of the ¹[Principal Commissioner of Central Excise or Commissioner of Central Excise], or has given to his superior officer two months' notice in writing of his intention or has other lawful excuse, shall on conviction before a Magistrate be punishable with imprisonment for a term which may extend to three months, or with fine which may extend to three months' pay, or with both.