APEX Modules
| Post-BCD Welcome |
| IRAC Data Analysis |
| MIPS Data Analysis |
| IRS Data Analysis |
| Supported Software |
| Contributed Software |
| Documentation |
| Data Analysis FAQ |
| Module | Description | Required Input | Output in output_apex directory |
|---|---|---|---|
| original IRAC image | *.fits | ||
| snestimator | estimates pixel uncertainty for each pixel in image | input image | Sigma/*_sigma.fits |
| fiducial_frame.pl | reads header of each image and produces a table with the pointing information and the pixel size of each image | list of input images | header_list.tbl |
| fiducial_image_frame | creates a unified grid coordinate system that leaves the least amount of empty spaces
N(up)-E(left) option can be selected by setting CROTA2 = 0 |
list of input images
header_list.tbl |
FIF.tbl |
| mosaic_int | performs projection and interpolation of input images onto the unified grid coordinate system
produced image is only the used fraction of the unified grid |
list of input images list of input uncertainty images (optional) FIF.tbl |
Interp/interp_*.fits Interp/interp_*_covg.fits Interp/interp_unc_*_sigma.fits (optional, needs list of input uncertainty images) Interp/interpolated_images.tbl |
| mosaic_coadd | performs the coaddition of the interpolated images | Interp/interpolated_images.tbl Interp/interpolated_covgmap.txt Interp/interp_SigmaList.txt fif.tbl |
Coadd/coadd_Tile_*_Image.fits Coadd/coadd_Tile_*_Cov.fits Coadd/coadd_Tile_*_Unc.fits (optional, needs list of input uncertainty images) Coadd/coadd_tiles.tbl |
| medfilter | performs background estimation of coadded images and outputs background subtracted images | list of coadded images | Coadd/coadd_Tile_*_Image_minback.fits |
| pointsourceprob | performs linear matched filtering and outputs point source probability images | output files from mosaic_coadd | Coadd/coadd_Tile_*_Image_PSP.fits |
| detect | performs image segmentation of point source probability images
define a "cluster" as a contiguous group of pixels |
output files from medfilter | Coadd/coadd_Tile_*_Image_detect.tbl (see module "fit_radius" for final format) |
| mosaic_combine | combines the tiles created by mosaic_coadd into one big image | Coadd/coadd_tiles.tbl Coadd/coadd_Cov_Tiles_List Coadd/coadd_Sigma_Tiles_List fif.tbl |
Combine/mosaic.fits Combine/mosaic_cov.fits Combine/mosaic_unc.fits (optional, needs lis t of input uncertainties) Combine/mosaic_minback.fits |
| gaussnoise | estimates the background fluctuations in the images (similar to medfilter) | list of coadded images | Coadd/coadd_Tile_*_Image_noise.fits |
| medfilter | performs background estimation of input images and outputs background subtracted images | list of input images | Medfilter/*_minback.fits |
| fit_radius | for each detection a search is performed in x and y directions
compares the values of the mean-subtracted input image and the corresponding uncertainty values finds the closest distance one has to go until the mean-subtracted image pixel values drop below the uncertainty level all the contents of the input table is copied into the output table with two more columns, FitX and FitY, added |
Coadd/coadd_Tile_*_Image_detect.tbl Coadd/coadd_Tile_*_Image_minback.fits Coadd/coadd_Tile_*_Image_Unc.fits Coadd/coadd_Tile_*_Image_Cov.fits (optional) |
Coadd/coadd_Tile_*_Image_detect.tbl (updated)
PRF_Map.tbl |
| sourcestimate | performs point source estimation
fits the input images with the PRF to estimate fluxes and refine positions of the point source candidates from the detection list if Max_Number_PS in sourcestimate namelist is set to anything but 1, the module will attempt to deblend the detections that can not be successfully fit |
combined Coadd/coadd_Tile_*_Image_detect.tbl updated tables (called mosaic_detect.tbl) Sigma/*_sigma.fits Medfilter/*_minback.fits PRF_Map.tbl |
extract_raw.tbl |
| aperture | calculates aperture photometry for each point source
the number of apertures is variable and both the number and the apertures are specified in the namelist |
extract_raw.tbl Combine/mosaic_minback.fits |
aperture.tbl |
| select | creates the final table by applying user specified constraints
and copying user specified columns
The example showed here was created with: |
extract_raw.tbl | extract.tbl |
