vmdet(7)
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 Users 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 http://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 http://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 3.1.7
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
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