Owner: ObservationCoreComponentsDM
This class gathers data management metadata for an observation.
It contains the following associations:
It contains the following attributes:
- dataProductType : Describes the high level scientific classification of the data product being considered. A string that conveys a general idea of the content and organization of a dataset.
- calibLevel : The calibration level concept conveys to the user information on how much data reduction/processing has been applied to the data. It is up to the data providers to consider how to map their own internal classification to the suggested scale here.
• Level 0: Raw instrumental data, in a proprietary or internal data-provider defined format, that needs instrument specific tools to be handled.
• Level 1: Instrumental data in a standard format (FITS, VOTable, SDFITS, ASDM, etc) which could be manipulated with standard astronomical packages.
• Level 2: Calibrated, science ready data with the instrument signature removed.
• Level 3: Enhanced data products like mosaics, resampled or drizzled images, or heavily processed survey fields. Level 3 data products may represent the combination of data from multiple primary observations.
- waveband : A string defined in the VOresource schema to name the spectral domain to which this observation belongs: optical, radio, XRay, Gamma- ray, etc.. see http://www.ivoa.net/Documents/latest/VODataService.html#cover for more info.
- numberOfSegments : An integer value that counts the number of original observed fields used to build up an observation.
In the case of associated observations, like "HST association" or observation resulting of coadded images, this number codes the number of indivivual images.
This also applies for multi-segment spectra, and can be generalised to any combined data cube.