This information to my knowledge isnt recorded in qlikview metadata. But you can generate log file while reload and this can be loaded as a tab delimited file and analyse what you need. Of course you need to carefully filter what you need which may be a labouries task but achievable.
This isn't exactly what you're asking for but may be helpful. I include script like this in all of my user applications, then show a chart with this data on it. I don't expect any users ever go to the tab and look at it, but it's quite convenient for me as a developer.
[Data Source Load Times]:
,timestamp(rangemax(evaluate('qvdcreatetime(' & chr(39) & '..\..\server\MasterData\QVD\'
& replace("Data Source",' ','_') & '.qvd' & chr(39) & ')')
,evaluate('qvdcreatetime(' & chr(39) & '..\..\server\MasterData\QVD\'
& replace("Data Source",' ','') & '.qvd' & chr(39) & ')'))) as "Last Loaded"
Order Item Expected Proceeds
Head on over to the Meta Model group http://community.qlik.com/groups/meta-model-qv-power-tool and you'll find everything you need even a graphical view of input and output.