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NAME

       vmdet - Determine RON, gain, and bad pixels from a set of flat field exposures.

SYNOPSIS

       esorex vmdet [OPTIONS] FILE.sof

DESCRIPTION

       This  recipe  is used to estimate the read-out-noise (RON) and the gain of the CCD, and to
       determine the positions of the bad pixels.

       The input SOF should contain at least five pairs of flat field exposures, all belonging to
       the  same  quadrant, each pair corresponding to a different exposure time. The flat fields
       can be produced either in imaging or in MOS mode. In MOS mode a HR grism is used, in order
       to  illuminate  the CCD also beyond the central region used in direct imaging mode, but no
       mask is inserted at the telescope focal plane.

       This type of exposure cannot really be considered a spectral flat field, because  the  CCD
       is  exposed  to  white  light  (i.e., without a wavelength dependency along the dispersion
       direction). The flat  fields  generated  for  the  purpose  of  determining  the  detector
       properties  are assigned the DO category DETECTOR_PROPERTIES, to distinguish them from the
       more  common  IMG_SCREEN_FLAT  or  MOS_SCREEN_FLAT  that  are  used  to   produce   master
       calibrations.

       Input files:

         DO category:          Type:         Explanation:  Required:
         DETECTOR_PROPERTIES   Raw           Flat field       Y
         MASTER_BIAS           Calib         Master bias      Y

       Output files:

         DO category:          Data type:    Explanation:
         CCD_TABLE             FITS table    Bad pixel table
         (none)                FITS image    Bad pixel image
         (none)                FITS image    Error image

       Only  the  primary  product,  the  bad  pixel  table,  is copied (or moved) to the product
       directory. Other products are generated only on request (typically for debug purposes) and
       are  not  assigned  a  DO  category  as  they  would  not be used anywhere in further data
       processing steps.

       For more details, please refer to the VIMOS Pipeline User´s Guide.

OPTIONS

       --CreateBadPixelMap <bool>
              Bad pixel map creation (bool; default: True). The full name of this option for  the
              EsoRex configuration file is vimos.Parameters.map [default = True].

       --CreateErrorImage <bool>
              Response  slope  uncertainty  map creation (bool; default: False). The full name of
              this option for the EsoRex configuration file is vimos.Parameters.error [default  =
              False].

       --DetectionThreshold <float>
              Threshold  in  determination  of bad pixels (float; default: 5.0). The full name of
              this  option  for  the  EsoRex  configuration  file  is  vimos.Parameters.threshold
              [default = 5.0].

       --DetectionMode <str>
              Bad  pixel  detection  method  (str;  default: ´Intolerant´). The full name of this
              option for the EsoRex configuration  file  is  vimos.Parameters.method  [default  =
              Intolerant].

       --ComputeQC <bool>
              Compute QC1 parameters. (bool; default: True). The full name of this option for the
              EsoRex configuration file is vimos.Parameters.quality.enable [default = True].

       Note that it is possible to create a configuration file containing  these  options,  along
       with  suitable default values. Please refer to the details provided by the 'esorex --help'
       command.

SEE ALSO

       The full documentation for the vimos pipeline can be downloaded as a PDF  file  using  the
       following URL:

              ftp://ftp.eso.org/pub/dfs/pipelines/vimos/vimos-pipeline-manual-6.9.pdf

       An   overview   over   the   existing   ESO  pipelines  can  be  found  on  the  web  page
       https://www.eso.org/sci/software/pipelines/.

       Basic documentation about the EsoRex program can be found at the esorex (1) man page.

       It is possible to call the pipelines  from  python  using  the  python-cpl  package.   See
       https://packages.python.org/python-cpl/index.html for further information.

       The  other  recipes  of  the  vimos  pipeline  are  vmbias(7),  vmdark(7),  vmifucalib(7),
       vmifucombine(7), vmifucombinecube(7), vmifuscience(7),  vmifustandard(7),  vmimcalphot(7),
       vmimflatscreen(7),  vmimflatsky(7),  vmimobsjitter(7), vmimobsstare(7), vmimpreimaging(7),
       vmimstandard(7),  vmmoscalib(7),  vmmoscombine(7),  vmmosobsjitter(7),   vmmosobsstare(7),
       vmmosscience(7), vmmosstandard(7), vmspcaldisp(7), vmspflat(7), vmspphot(7)

VERSION

       vmdet 3.2.3

AUTHOR

       ESO VIMOS Pipeline Team <usd-help@eso.org>

BUG REPORTS

       Please  report  any  problems to usd-help@eso.org. Alternatively, you may send a report to
       the ESO User Support Department <usd-help@eso.org>.

LICENSE

       This file is part of the  VIMOS  Instrument  Pipeline  Copyright  (C)  2002-2005  European
       Southern Observatory

       This program is free software; you can redistribute it and/or modify it under the terms of
       the GNU General Public License as  published  by  the  Free  Software  Foundation;  either
       version 2 of the License, or (at your option) any later version.

       This  program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.
       See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program;
       if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,  Boston,
       MA  02110-1301 USA