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| Paper: |
Visibility Isn't Everything: Managing Metadata and Auxiliary Data in ALMA Observations |
| Volume: |
461, Astronomical Data Analysis Software and Systems XXI |
| Page: |
165 |
| Authors: |
Lorente, N. P. F. |
| Abstract: |
Alongside the visibility data produced during each ALMA
observation, the
telescope on-line system collects, processes and archives metadata and auxiliary data which describe the observation and inform subsequent data reduction and
processing.
These come from various sources, including information and observational
requirements provided by the PI through the Observing Tool, telescope monitoring
data, and data products generated by the Telescope Calibration system.
This paper will describe ALMA's new design for DataCapturer, the software module
which collects, organises and processes these secondary data, marshaling them to
produce an instance of the ALMA Science Data Model (SDM), which is then archived
together with the visibility data.
The new design was driven by a need for extensibility and long-term
maintainability of the module, which comprises a state machine at its hub and a
cascading dependency model binding together a large number of data handlers. |
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