[Heig] HEIG Note discussion: Obscore and dataproduct_type and various classes of datasets in High energy data

[Mireille Louys]

Dear VO Heig , ( cross post to DM as well)

During the VOHE note review , I came up on a question how to identify 
the various kinds of data sets we are talking about in the note,
and how to consider their relationships .

I think we need uses cases to illustrate how a user will select a data 
set of interest from the various properties exposed:
- in an observation data set,
- in a response function data set ,
-in other files as draws, pdf, regions proposed with respect to the 
Chandra archive that I have named 'explanatory datasets'

ObsDataset defined in Obscore is the result of an observation process, 
using the observing configuration.
Response  are computed from various Obsconfig parameters.
Explanatory datasets are also computed from statistical analysis on the 
observed data.

I suggest these are diffrent in nature and cannot derive from the 
Obsdataset class of Obscore .
But they are tightly linked to it .

I have tried to illustrate the relations I can guess from our 
discussions , but this must be iterated with you, High Energy astronomers ,
and with TAP designers to converge to a clear use case .

here attached is a first take  .

Thanks for your comments and suggestions .

Best , Mireille

-- 
--
Mireille Louys, MCF (Assistant Professor)
Centre de données Astronomiques (CDS)       Equipe Images, ICube
Observatoire de Strasbourg                  Telecom Physique Strasbourg
11, rue de l' Université                    300, Bd Sebastien Brandt CS 10413
F-67000 Strasbourg                          F-67412  Illkirch Cedex
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