CIAO - Chandra Interactive Analysis of Observations¶

The ciao bundle contains the following versions of the listed software.

Software	Version
caldb_main	4.10.4
ciao	4.15.1
ds9	8.4.1
ipython	8.12.0
marx	5.5.2
python	3.10.10
sherpa	4.15.0

UFS HPC Usage Example¶

The following command can be executed in the terminal to load the bundle:

1	`module load ciao`

With the module loaded the following commands can be run:

1
2
3

sherpa
ds9
ahelp

The ciao_shell commmand can be used to access a shell in the ciao bundle.

1	`ciao_shell`

Cloning the conda environment¶

If additional packages are required then the conda environment can be cloned to your home. Run the ciao_shell command and run the following commands in the ciao shell:

conda create --name ciao++ --clone ciao
conda activate ciao++
conda install -q -c conda-forge pyarrow

The name ciao++ can be changed to your needs and pyarrow can be adjusted to your needs. The new environment can be accessed as follows:

ERN_OVERRIDE_CONDA_ENV="ciao++" sherpa

Finally, creating the clone can be scripted using a HERE-DOC in Bash

ciao_shell <<SCRIPT
. /ern/bin/activate
conda create --name ciao++ --clone ciao
conda activate ciao++
conda install -q -c conda-forge pyarrow
SCRIPT

The environment can be removed as shown below:

ciao_shell <<SCRIPT
. /ern/bin/activate
conda-env remove -n ciao++
SCRIPT

Performance Notes¶

No performance notes available

Recommended resources per session¶

No recommended resources available

Benchmarks¶

No benchmarks available.

UFS HPC Community Guides and Tutorials¶

No community guides available.

Official site and documentation¶

Licensing Information¶

CIOA is a pipeline made up of many different software. Refer to the specific software's documentation for the license.

Primary citation¶

CIAO: Chandra's data analysis system Fruscione et al. 2006, SPIE Proc. 6270, 62701V, D.R. Silvia & R.E. Doxsey, eds

External Guides and Resources¶

If you know of a guide/tutorial that you have found useful, please help us share it by contacting the HPC staff at hpc@ufs.ac.za