Try this one in a custom query on your node details page. I set the logic so that it displays the critical icon if the last backup is older than a day, but depending on how frequently you save your configs you may need to adjust the line with the case on it.
SELECT ca.NodeProperties.Nodes.Caption,
max(downloadtime) as [Last Backup], ConfigType
, case when daydiff(max(downloadtime), GETDATE())>1 then '/Orion/images/StatusIcons/Small-Critical.gif'
else '/Orion/images/StatusIcons/Small-Up.gif'
end as [_iconfor_Last Backup]
FROM NCM.ConfigArchive ca
where ca.NodeProperties.Nodes.NodeID=${Nodeid}
group by ca.NodeProperties.Nodes.Caption, configtype
order by caption, configtype
I was a little bit disappointed to see that it still seems to work after I set my account to have no access to NCM, suggests that SWQL may bypass those account restrictions on the account settings page. Luckily for you though.