Embedded Files
hfs_fits_blanking is an auxiliary procedure to flag the output FITS files of hfs_cube and hfs_nh3_cube, according to the parameter values, errors, or SNR.
- The FITS files created by hfs_cube and hfs_nh3_cube for each velocity component and fit parameter,
<parfile>_<fit_par>_comp#.fits, have two planes, the first one with the values of the parameter at each pixel, and the second one with with the error of the value. - The procedure reads the values and errors, and allows you to blank the pixels that fulfil a criterion on parameter error, value, or value/error, above or below a cutoff value.
- The output FITS file is a 2-axes FITS file,
<parfile>_<fit_par>_comp#_blank.fits, with the values of the parameter for non-flagged pixels, and NaN for flagged-out pixels. - Example of a hfs_blanking run:
$ hfs_blanking l1287_dvline_comp1.fits _________________________ HfS_blanking Robert Estalella. 2015/12 _________________________ naxis= [128, 128, 2] Storage allocated successfully for arrays Fits file: l1287_dvline_comp1.fits (1) Cols (2) Rows (3) Chan CTYPEi= RA---SIN DEC--SIN VAL_&_ER NAXISi= 257 257 2 CRPIXi= 129.000 130.000 0.000 CRVALi= 9.198 63.484 0.000 CDELTi= -1.667E-04 1.667E-04 1.000E+00 CROTAi= 0.000E+00 0.000E+00 0.000E+00 EQUINOX= 2000.0 Data stats: Min Max Average Rms Values: 0.0000E+00 7.7783E+00 1.5204E-02 1.1285E-01 Errors: 0.0000E+00 1.8532E+01 Fits File Blanking Menu__________________ 0. No blanking 1. Blanking for Error > cutoff 2. Blanking for Error < cutoff 3. Blanking for abs(Value)/Error < cutoff 4. Blanking for abs(Value) > cutoff 5. Blanking for abs(Value) < cutoff Choose option (0-5): Input
Input
<parfile>_<fit_par>_comp#.fits: file created by hfs_cube or hfs_nh3_cube in folder maps.
Output
Output
<parfile>_<fit_par>_comp#_blank.fits: 2-axes FITS file with blanked pixels.
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