Level 1 personnel sweep
Level one personnel sweep was a scan of personnel in a section of the station Deep Space 9. 

In 2369, Constable Odo ordered the computer to run a level one personal sweep on the pylons. He was ensuring there was no personnel remaining in the pylons after an evacuation order had been given. The computer informed Odo that the sweep would take approximately three minutes. ()
Scans
Level 01 personnel sweep