For getting the definition of resident/non resident you may see Sec 6 of the Income Tax Act 1961.Also,the taxability issues discussed here are relevant only from Indian law.It may happen that you are taxed in Australia on the amounts received there and also on the salary you receive in India if you are Australian resident as per their tax laws.If this be the case,you will have to look at the double taxation avoidance agreement,if any ,between India and Australia or any other provision in the Australian law that gives you credit for the tax you pay in India on your Indian salary.
