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When the analysis is finished, you will find that new files have
appeared in your working directory. In Figure 14 an
overview of the files related to the image reconstruction is
given. The full description of all files produced at different levels
is given in Appendix C.
Figure 14:
Overview of the IMA level products
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As it is shown in Figure 14, there are results for each
science window as well as for the overall group. Other files might be
present in the folder, including the binning of spectra, which is
saved even if no spectra are going to be extracted.
Science window results include:
- Images: scw/0051004X0010.001/isgri_sky_ima.fits (where X=1..5)
for each energy range five images are produced: INTENSITY, VARIANCE,
SIGNIFICANCE and
RESIDUAL and EXPOSURE.
To know which
type of image and which energy band correspond to a given extension,
you can either check in the header of the isgri_sky_ima.fits
file extensions, or check the first extension of the file, an index,
summarizing the file content. In Figure 15 the column
highlighted in green was added by hand to identify the corresponding
extensions of the file. More details on index concept are in [1].
- Detected source list: scw/0051004X0010.001/isgr_sky_res.fits (where X=1..5)
list of the sources detected in each energy range with reconstructed
RA, DEC, flux, error and significance.
Observation group results include:
- Image: isgri_mosa_ima.fits
The structure of this file with the mosaic images is similar to the
one of isgri_sky_ima.fits, but instead of residual maps you have
the exposure ones.
- Detected source list: isgri_mosa_res.fits
list of the sources detected in the mosaic image in each energy
range with reconstructed RA, DEC, flux, error and significance.
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Energy bins used for imaging: if the energy boundaries are set through the parameters IBIS_nregions_ima, IBIS_nbins_ima, and
IBIS_energy_boundaries_ima, a file called
isgri_user_bins_ima.fits is output.
This is a fits file containing the energy bins used for the imaging
steps. The files contains a single extension (ISGR-EBDS-MOD), with
three columns specifying channel number and corresponding min/max
energy of the channel (one channel per line). This file can be used e.g.,
in subsequent analysis runs that needs the same energy binning,
by providing the file name (with its complete path)
through the parameter IBIS_II_inEnergyValues.
The single science window and mosaic results are merged in the file
isgri_srcl_res.fits. This file contains all the sources from the
isgri_catalog.fits plus all the new sources, with the information on
their fitted position, fluxes, and detection level.
You find more details on the structure of the output files in Section
C.7.1.
Figure 15:
A part of the GROUPING extension table of an isgri_sky_ima.fits
file.
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Next: Displaying the Results from
Up: Image Reconstruction
Previous: Image Reconstruction
2018-11-20