SYNOPSIS

esorex xsh_mflat [OPTIONS] FILE.sof

DESCRIPTION

This recipe creates the master flat and the orders edges traces table frames.

  Input Frames :
    - [UVB] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_D2_mode_UVB, mode=SLIT/IFU)
    - [UVB] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_QTH_mode_UVB)
    - [VIS] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_mode_VIS)
    - [NIR] A set of n x n RAW frames ((Format = RAW, n>=3, Tag = FLAT_mode_NIR_ON, FLAT_mode_NIR_OFF)
    - A spectral format table (Format = PRE, Tag = SPECTRAL_FORMAT_TAB_arm)
    - An order table (Format = TABLE, Tag = ORDER_TAB_CENTR_arm)
    - [UVB,VIS] A master bias (Format = PRE, Tag = MASTER_BIAS_arm)
    - [OPTIONAL] A map of reference bad pixel (Format = QUP,RAW, Tag = BP_MAP_RP_arm)
    - [OPTIONAL] A map of non linear pixel (Format = QUP,RAW, Tag = BP_MAP_NL_arm)
    - [OPTIONAL,UVB,VIS] A master dark (Format = PRE, Tag = MASTER_DARK_arm)
  Products :
    - An updated order table with edge UP and edge LOW (Format = TABLE, TAG = ORDER_TAB_EDGES_mode_arm)
    - A master flat (Format = PRE, PRO.CATG = MASTER_FLAT_mode_arm)
    - The inter-order background frame (Format = PRE, PRO.CATG = MFLAT_BACK_mode_arm)
    - The inter-order background sampling points grid table
      (Format = PRE, PRO.CATG = MFLAT_GRID_BACK_mode_arm)
  Prepare the flat frames.
  Stack and sigma clip all the flat frames.
  Subtract master bias.
  Subtract master dark.
  Detect order edge.
  Subtract background.
  Create the Master Flat.

OPTIONS

--keep-temp <str>

If \'no\', temporary files are deleted. (str; default: \'no\'). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.keep-temp [default = no].

--debug-level <str>

Additional xshooter debug level. One of \'none\', \'low\', \'medium\', \'high\' (str; default: \'none\'). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.debug-level [default = none].

--time-stamp <bool>

Add timestamp to product file name. (bool; default: False). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.time-stamp [default = False].

--decode-bp <long>

Integer representation of the bits to be considered bad when decoding the bad pixel mask pixel values. (long; default: 2144337919). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.decode-bp [default = 2144337919].

--pre-overscan-corr <long>

pre-overscan correction.0: no correction1: mean overscan correction2: mean prescan correction3: (mean pre+mean overscan)/2 correction (long; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.pre-overscan-corr [default = 1].

--stack-method <str>

Method used to build master frame. (str; default: \'median\'). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.stack-method [default = median].

--klow <float>

Kappa used to clip low level values, when method is set to \'mean\' (float; default: 5.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.klow [default = 5.0].

--khigh <float>

Kappa used to clip high level values, when method is set to \'mean\' (float; default: 5.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.khigh [default = 5.0].

--detectorder-edges-search-win-hsize <long>

Half window size in pixels for the search for order edges (long; default: 50). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-edges-search-win-hsize [default = 50].

--detectorder-edges-flux-thresh <float>

Threshold in relative flux (compared to the central flux) below which the order edges are defined (float; default: 0.4). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-edges-flux-thresh [default = 0.4].

--detectorder-min-sn <float>

Minimum signal-to-noise ratio at the centroid of the orders (60 for SLIT-UVB,VIS,NIR, 20 for IFU-UVB,VIS, 4 for IFU-NIR (float; default: -1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-min-sn [default = -1.0].

--detectorder-min-order-size-x <long>

Minimum order size in pixels along X direction [60 for UVB,VIS, 40 for NIR] (long; default: -1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-min-order-size-x [default = -1].

--detectorder-chunk-half-size <long>

Half size in pixels of the chunks in Y direction (long; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-chunk-half-size [default = 1].

--detectorder-slitlet-low-factor <float>

Factor for slitlet on lower edge slitlet (IFU) (float; default: 1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slitlet-low-factor [default = 1.0].

--detectorder-slitlet-up-factor <float>

Factor for slitlet on upper edge (IFU) (float; default: 1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slitlet-up-factor [default = 1.0].

--detectorder-fixed-slice <bool>

If true the size of slitlet is fixed (IFU) (bool; default: True). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-fixed-slice [default = True].

--detectorder-slice-trace-method <str>

method adopted for IFU slice tracing (\'fixed\' for SLIT and \'sobel\' for IFU): (str; default: \'auto\'). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slice-trace-method [default = auto].

--detectorder-qc-mode <bool>

If true allows one to skip edge detection on orders below detectorder- min-sn (oly for QC mode, not to be set by normal users) (bool; default: False). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-qc-mode [default = False].

--detectorder-d2-min-sn <float>

minimum signal noise ratio in D2 lamp frame in order (float; default: 60.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-d2-min-sn [default = 60.0].

--background-edges-margin <long>

X margin to order edge to define background sampling points (long; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-edges-margin [default = 1].

--background-poly-deg-y <long>

Poly mode fit deg along Y. (long; default: 9). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-deg-y [default = 9].

--background-poly-deg-x <long>

Poly mode fit deg along X. (long; default: 9). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-deg-x [default = 9].

--background-poly-kappa <float>

Poly mode kappa value of kappa-sigma-clip outliers removal. (float; default: 10.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-kappa [default = 10.0].

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.

RELATED TO xsh_mflat…

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

  • ftp://ftp.eso.org/pub/dfs/pipelines/xshoo/xshoo-pipeline-manual-12.1.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 xshoo pipeline are xsh_cfg_recover(7), xsh_lingain(7), xsh_geom_ifu(7), xsh_wavecal(7), xsh_scired_slit_nod(7), xsh_respon_slit_nod(7), xsh_mdark(7), xsh_respon_slit_offset(7), xsh_orderpos(7), xsh_scired_ifu_stare_drl(7), xsh_scired_ifu_stare(7), xsh_flexcomp(7), xsh_scired_ifu_offset_drl(7), xsh_util_physmod(7), xsh_respon_slit_stare(7), xsh_2dmap(7), xsh_mbias(7), xsh_predict(7), xsh_scired_ifu_offset(7), xsh_scired_slit_stare(7), xsh_scired_slit_offset(7)

VERSION

xsh_mflat 2.5.2

AUTHOR

P.Goldoni, L.Guglielmi, R. Haigron, F. Royer, D. Bramich, A. Modigliani <[email protected]>

BUG REPORTS

Please report any problems to [email protected] Alternatively, you may send a report to the ESO User Support Department <[email protected]>.

LICENSE

This file is part of the X-shooter Instrument Pipeline Copyright (C) 2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA