Using SAOImage ds9 - CIAO 4.17 - Harvard University
Jan 13, 2022 · Overview Synopsis: The imaging application SAOImage ds9 is distributed with CIAO as the default imager. It is developed independently from CIAO but does contain some CIAO-specific features. Purpose: To introduce a few of the key features used in CIAO analysis ranging from simple (e.g. defining preferences) to complex (e.g. use of the XPA messaging …
Analysis Guide: Video Demos and Tutorials - CIAO 4.17
Nov 1, 2024 · The ds9 catalog tool allows users to annotate their images with markers for sources from many different catalogs (including the Chandra Source Catalog and users own source list, eg output from CIAO's wavdetect, celldetect, and vtpdetect).
CIAO: X-ray Data Analysis Software - CIAO 4.17
Jan 31, 2025 · CIAO is the software package developed by the Chandra X-Ray Center for analysing data from the Chandra X-ray Telescope. It can also be used with data from other Astronomical observatories, whether ground or space based.
Estimate Source Counts in an Event File - CIAO 4.17
Feb 8, 2022 · CIAO Analysis menu in ds9 The net counts can also be obtained directly in ds9 using the CIAO analysis menu in ds9, aka dax. From ds9 select the top-level Analysis menu and then CIAO. This is the top level menu of all the CIAO tasks that are available in ds9. To get the net counts, simply go to Statistics and then Net Counts.
Using CIAO Region Files - CIAO 4.17 - Harvard University
Feb 22, 2022 · The more complicated regions - elliptical and box annuli, the panda shape, and format used for writing grids of annuli - will not work properly. In general, the ds9 region format has many more options for storing display properties (color, coordinate system, comments), while the CIAO region format is a more simplified, stripped down version.
Creating Source and Background Files - CIAO 4.17
Jan 24, 2022 · Overview Synopsis: The tool dmgroupreg takes a ds9 region file (which must contain grouping information) and creates source and background region files that the CIAO tools can understand. There is also the option to remove the source regions from the background within each group. Related Links: The Using CIAO Region Files thread. ds9 Reference Manual Last …
Using the Output of Detect Tools - CIAO 4.17 - Harvard University
Feb 17, 2022 · ds9 has a very power catalog tool that allows users to overlay multiple catalogs on an image and to perform various kinds of analysis including cross-matching between multiple catalogs. Users unfamiliar with the ds9 catalog may find this tutorial useful:
Bugs: Installation & Smoke Tests - CIAO 4.17
Dec 10, 2024 · The ds9 smoke test results may differ in the least significant figure. A sample diff log from test ds9-smoke001:
ObsVis: Chandra Observation Visualizer - ObsVis
Dec 11, 2024 · ObsVis is a tool to aid in observation planning which allows the inspection of sky images with overlaid instrument fields-of-view (FoV). ObsVis interfaces with the SAOimage DS9 image display tool, and facilitates detailed manipulation of Chandra pointing and instrument parameters. ObsVis is available as part of the CIAO software. The obsvis aim point calibration …
Ahelp: fluximage - CIAO 4.17 - Harvard University
Finally ds9 is used to view the exposure-corrected image, the name of which includes the energy range, effective energy used and the binning factor. The FOV file, which indicates the extent of the observation, is also shown in the ds9 window.