Record Details

ASKAP Science Data Processor software - ASKAPsoft Version 0.19.5

CSIRO RDS Repository

View Archive Info
 
 
Field Value
 
Title ASKAP Science Data Processor software - ASKAPsoft Version 0.19.5
 
Creator Juan Guzman
 
Subject Astronomical and Space Sciences not elsewhere classified
 
Description ASKAPsoft, the ASKAP Science Data Processor, provides data processing functionality, including:

* Calibration
* Spectral line imaging
* Continuum imaging
* Source detection and generation of source catalogs
* Transient detection

ASKAPsoft is developed as a part of the CSIRO Australian Square Kilometre Array Pathfinder (ASKAP) Science Data Processor component. ASKAPsoft is a key component in the ASKAP system. It is the primary software for storing and processing raw data, and initiating the archiving of resulting science data products into the data archive (CASDA).

The processing pipelines within ASKAPsoft are largely written in C++ built on top of casacore and other third party libraries. The software is designed to be parallelised, where possible, for performance.

ASKAPsoft is designed to be built and executed in a standard Unix/Linux environment and core dependencies must be fulfilled by the platform. These include, but are not limited to, a C/C++/Fortran compiler, Make, Python 2.7, Java 7 and MPI. More specific dependencies are downloaded by the ASKAPsoft build system and are installed within the ASKAPsoft development tree. Specific to the Debian platform, after a standard installation of Debian Wheezy (7.x) the following packages will need to be installed with apt-get:

* g++
* gfortran
* openjdk-7-jdk
* python-dev
* flex
* bison
* openmpi-bin
* libopenmpi-dev
* libfreetype6-dev
* libpng12-dev

More information regarding the building, installation and running of the software can be found in the README file in the root of the file structure that forms this collection.

Source code can be accessed via the links in Related Materials section.

-----
The Selavy code has been updated to add to the catalogue
specifications for the continuum island & component catalogues:
* The component catalogue now has error columns for the deconvolved
sizes, as well as for the alpha & beta values.
* The 3rd flag column now indicates where the alpha &
beta values are measured from - true indicates they come from
Taylor-term images.
* The island catalogue now has:
- An error column for the integrated flux density
- Columns describing the background level, both the mean background
across the island, and the average background noise level.
- Statistics for the residual after subtracting the island's fitted
Gaussian components - columns for the max, mean, min, standard
deviation and rms.
- Columns indicating the solid angle of the island, and of the
image restoring beam.
* Occasional errors in converting the major/minor axis sizes to the
correct units have also been fixed.

The pipelines have been updated with new functionality and options:
* The new ingest mode of recording one measurement set per beam is
now able to be processed. The MS metadata is recorded from one of
the measurement sets, and the splitting is done from the
appropriate beam.
* Stokes-V flagging is available for all flagging steps. This is
performed in the same job as the dynamic amplitude flagging, and is
parameterised by its own parameters - consult the documentation for
the full list (essentially the same as FLAG_DYNAMIC parameters with
STOKESV replacing DYNAMIC or DYNAMIC_AMPLITUDE).
* Selection of specific spectral channels in the flagging tasks is
now possible with CHANNEL_FLAG_1934, CHANNEL_FLAG_SCIENCE, and
CHANNEL_FLAG_SCIENCE_AV.
* A bug that meant the continuum source-finding job would fail to
convert higher-order Taylor terms or continuum cubes to FITS format
has been fixed.
* A fix has been made to the bandpass-smoothing casa script call,
adding in a --agg command-line flag to the casa arguments. This
allows the plotting to be run correctly on the compute nodes.
* Scripting errors in the flagging scripts that showed up when
splitting was not being done have been rectified.
 
Publisher CSIRO
 
Contributor Matthew Whiting
Max Voronkov
Daniel Mitchell
Stephen Ord
Daniel Collins
Malte Marquarding
Paulus Lahur
Tony Maher
Ger Van Diepen
Keith Bannister
Xinyu Wu
Emil Lenc
Jonathan Khoo
Eric Bastholm
 
Date 2017-11-14
 
Type —
 
Format —
 
Identifier csiro:26934
 
Language —
 
Coverage —
 
Rights —