Hello Tarun,
Yes, it is possible. You can use the below script to generate a custom column in a report:
$object = $Context.GetADObject()
# Get mailbox parameters
$mailboxParams = $object.GetMailParameters("ADM_GET_EXCHANGE_PARAMS_FLAGS_NONE")
# Get devices number
$activeSync = $mailboxParams.MailboxFeatures.GetItemByType("ADM_EXCHANGE_MAILBOXFEATURETYPE_ACTIVESYNC")
$Context.Value = $activeSync.MobileDevices.Count
For information on how to create reports, have a look at the following tutorial: https://www.adaxes.com/tutorials_ActiveDirectoryManagement_CreateReport.htm.