Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-03-09
Astronomy and Astrophysics
Astrophysics
6 pages, 5 figures, requires apj.bst, accepted for publication in Publications of the Astronomical Society of Australia
Scientific paper
10.1071/AS06004
Editing of radio interferometer data, a process commonly known as ``flagging'', can be laborious and time-consuming. One quickly tends to flag more data than actually required, sacrificing sensitivity and image fidelity in the process. I describe a program, Pieflag, which can analyse radio interferometer data to filter out measurements which are likely to be affected by interference. Pieflag uses two algorithms to allow for data sets which are either dominated by receiver noise or by source structure. Together, the algorithms detect essentially all affected data whilst the amount of data which is not affected by interference but falsely marked as such is kept to a minimum. The sections marked by Pieflag are very similar to what would be deemed affected by the observer in a visual inspection of the data. Pieflag displays its results concisely and allows the user to add and remove flags interactively. It is written in Python, is easy to install and use, and has a variety of options to adjust its algorithms to a particular observing situation. I describe how Pieflag works and illustrate its effect using data from typical observations.
No associations
LandOfFree
Automated Editing of Radio Interferometer Data with Pieflag does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Automated Editing of Radio Interferometer Data with Pieflag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated Editing of Radio Interferometer Data with Pieflag will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-710491