• Mitchell, Daniel
• Bastholm, Eric
• Ord, Stephen
• Lenc, Emil
• Van Diepen, Ger
• Whiting, Matthew
• Khoo, Jonathan
• Collins, Daniel
• Wu, Xinyu
• Marquarding, Malte
• Bannister, Keith
• Lahur, Paulus
• Maher, Tony
• Voronkov, Max
• Guzman, Juan

Abstract

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 detectionASKAPsoft 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-devMore 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.----- A patch release that fixes a few bugs in the pipeline:* Adds better robustness to the USE_CLI=false option, for use whenthe databases at MRO are unavailable.* A scripting error in the self-calibration script (for the Cmodeloption).* Fixes to the defineArtifacts script, to better handle FITSextensions.* When the image-based continuum-subtraction option is run, thespectral source-finding job will now search the continuum-subtractedcube. The spectral source-finding will also handle sub-bandscorrectly.* There have also been fixes to ensure the continuum-subtractedcubes are created in appropriate FITS format and mosaickedcorrectly.* Copying of continuum validation files to the archive directory hasbeen updated to reflect an improved directory structure.It also makes a few minor changes to the processing software:* The Wiener preconditioner will now report in the log the amount bywhich the point-source sensitivity is expected to increase over thetheoretical naturally-weighted level.* The casdaupload utility can now produce an XML file with absolutepaths to data products, leaving them in place - rather than copyingall data products to the upload directory. This is compatible withbehaviour introduced in CASDA-1.10.* Ccalapply has a new parameter than can restrict the sizes of chunkspresented in single iterations, using new options for theTableDataSource classes.* The component catalogue produced by Selavy had a minor error in thecalculation of the error on the integrated flux (where the minoraxis should have been used, the major axis was used instead).* Fixed issues with cmodel functional tests, relating to using thecorrect catalogue columns.* Fixed a failing scimath unit test.* The ingest pipeline now can apply phase gradients in parallel.

Topics

• impedance spectroscopy
• phase
• atom probe tomography