Hi,

Yes , you can participate in JOSAA Councelling. Anyone who has attended JEE Mains and has valid Rank can participate in JOSAA Councelling. You can apply for all colleges that are available in JOSAA. However it is difficult to get NITs or IIITs in your marks range. In order to predict what college you could get, you should use this tool :

JEE Mains College Predictor

Thanks!!!!