Pendrive bootable not showing after trying to reinstall Mavericks
How do you know you made your drive bootable?

The first thing to attempt is to see if you erased the entire drive or just the original boot partition. Boot your Mac and hold down 'Command-R' and if it is still there you will boot into the Recovery partition. If you have a recent Mac and an internet connection then it will boot into internet recovery if you have deleted the Recovery partition.

Once you are in Recovery mode you can re-install the OS your Mac came with and try the Mavericks install again.