Accessing Data: Developers
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Tom's Input (12-11-2007)
Description Format L0dataT Raw data; post trigger LDF L0dataF Raw data; post OBF (on-board filter) LDF cal Calorimeter ROOT Tree ROOT digi Digitization ROOT Tree ROOT fes Pointing history (exposure) EBF gcr Galactic cosmic ray (heavy ion ROOT ntuple) ROOT mc Monte Carlo ROOT Tree ROOT merit "Analysis" ROOT ntuple ROOT recon Reconstruction ROOT Tree ROOT relation ROOT relational table ROOT meta ROOT file for cel (composite event list) eric charles ROOT svac SVAC ROOT ntuple ROOT svachist SVAC histogram ROOT
from Dan:
plus (Tony or Dan):
Sites (e.g., SLAC, SLAC_ROOT, etc.)
plus ???metadata folder/button???
from Tony:
Simple Skimmer
from Igor:
Full Skimmer (note; link is broken)
Tom's Data Catalog FAQs Contributions:
How do I access/download a single file from a Monte Carlo task?
If you run a web browser on a SLAC machine, then go to the dataCatalog, http://glast-ground.slac.stanford.edu/DataCatalog,
navigate to the data of interest, e.g., MC-Tasks -> ServiceChallenge
-> backgnd-GR-v13r5p5-Day -> runs -> gcr, then click on the "Show
Files" link, then click on any of the individual run numbers, e.g., "000000" is stream 0 in the task. You will be asked if you wish to download the file. As you will be running on a SLAC machine, the entire SLAC disk environment will be visible for you to select an appropriate destination.
You can also download files to your home site by running the web browser on one of your own machines. The dataCatalog downloader should just work.
How do I tell the simple skimmer which datasets to read?
First, navigate to the desired files in the dataCatalog, http://glast-ground.slac.stanford.edu/DataCatalog, by using the left-hand column, e.g. MC-Tasks -> ServiceChallenge ->
allGamma-GR-v13r5p5 -> runs -> merit, and then use the "Skim Files"
link on that page - which causes the correct dataset identifier to be generated in the simple skimmer form.
How do I access/download a single file from a Monte Carlo task?
If you run a web browser on a SLAC machine, then go to the dataCatalog, http://glast-ground.slac.stanford.edu/DataCatalog,
navigate to the data of interest, e.g., MC-Tasks -> ServiceChallenge
-> backgnd-GR-v13r5p5-Day -> runs -> gcr, then click on the "Show
Files" link, then click on any of the individual run numbers, e.g., "000000" is stream 0 in the task. You will be asked if you wish to download the file. As you will be running on a SLAC machine, the entire SLAC disk environment will be visible for you to select an appropriate destination.
You can also download files to your home site by running the web browser on one of your own machines. The dataCatalog downloader should just work.
How do I tell the simple skimmer which datasets to read?
First, navigate to the desired files in the dataCatalog, http://glast-ground.slac.stanford.edu/DataCatalog, by using the left-hand column, e.g. MC-Tasks -> ServiceChallenge ->
allGamma-GR-v13r5p5 -> runs -> merit, and then use the "Skim Files"
link on that page - which causes the correct dataset identifier to be generated in the simple skimmer form.