I am recently returned from a trip to Sagittarius A* and a returned with data from almost 3000 star systems. I have been in the process of selling it off at various stations in order to work up my faction. After the most recent patch I discovered that it shows I have Level 2,3 scans.
System Visited: 3460
Level 2 Detailed Scans: 2395
Level 3 Detailed Scans: 393
After looking carefully though my scan data as I was selling it I discovered very rarely that the scan data on a few system showed in addition to 'Detailed Surface Data' from my DSS, a few also showed 'Penetrative Scan'. When I sold any data that included Penetrative Scans, my Level 3 scan count went up accordingly. The Penetrative Scan is always following a Detailed Scan, never by itself. I could find no rhyme or reason for when this type of scan occurred and have not discovered any way to make it happen, but if it was present it always applied to all Detailed Scanned objects in the system. Also, these objects do not appear to show any additional information in the System display. More importantly it increases the value of that scan data by nearly 100%. Penetrative scans are not new, others have seen them in their scan data and there appear to have been mentioned by FD back in Beta 2/3 but have not been seen since.
So scans break down as such:
Level 1: Discovery scan or possibly scanned without the use of a DSS (no count displayed so impossible to tell)
Level 2: Detailed scan using DSS
Level 3: Penetrative Scan (Don't currently know make this happen, just seem to occur rarely at random)
I will try to post some screenshots later and maybe try to figure out how to post a video if I get motivated enough.
Hope this helps
This is very interesting. I seem to have a very large number of l3 scans relitive to the little exploring I've done (Only just got advanced discovery scanner ftw)..*logs in to check* 862 l2 and 238 level 3's. I've noticed that sometimes you will get a second round of scanning after your first round when scanning an item - you'll get the report of scan complete, then it will still say 'unexplored' and scan some more; This seems to especially happen when particularly close to objects; Will test this out some tomorrow. For now, sleep.
Now this is getting interesting...
Yes, I have noticed this before on a couple of planetary objects, but for me, it doesn't show anything in the scan results. This maybe because I can't work out how to scroll through the results in the cartography information. I can't put focus on the list of scanned planetary objects to the right of the corresponding entry. I have been using a HOTAS though, maybe there's a keyboard key that does the job?
I thought that this second scan, or more penetrative scan, was a bug or mistake on my part, as if I'd moved the ship enough to reset scanning, but then noticed while scanning an asteroid belt, whilst not moving, that the scan finished and a new one began. I first thought that it had picked a new object to scan all by itself, an object immediately behind or in front which I had failed to notice, but this was not so. Yes, I scan asteroid belts. The completionist in me will not let me pass them by. And I hate myself for it.
Now all we need is more confirmations of this behaviour.
Edit: From what I've observed, similar to the findings of outasync and gamlain, there is no correlation between type of object scanned and penetrative scan, it just happens randomly.