what do you mean exactly with cell report?
There are a few possibilities to check and monitor the cell server.
May be using the Cloud Control with Exadata Plugin and on the command line
you could use the "cellcli" with a lot of so calles list commandos.
Please do a cellcli and then help list.
But if you are looking for other reports please aks again :-)
you can get very easy an performance overview from Cloud Control.
The way in Cloud Control is Target -> Exadata -> Exadata Plugin -> Select the Cellserver -> Performance. Here you get am information last
2 hours, day, week and so on.
here the final solution using a script.Please take a look in the Metalink Note:
Oracle Sun Database Machine X2-2/X2-8 Diagnosability and Troubleshooting Best Practices [ID 1274324.1]
getiorate.sh - dynamically show throughput across cells
The script could be downloaded.