Hi @Amitm22,
Your particles are binned (that is why FSC is not dropping below 0.143, and the Nyquist is at 5.4 Å). I would re-extract with less binning and try again.
Having said that, you should still see some details (at least secondary structural features) in the map if all is well, even with binned particles. Did the ab initio volumes look ok?
Cheers
Oli