Detector’s linearity & non linear bad pixels determination.
This recipe computes detector non linearities and a bad pixel map.
The input files are increasing intensity raw flats their associated tags should be LINEARITY_LAMP.
The output are: A table (PRO.CATG=LIN_DET_INFO) with information on the detector non linearities A table (PRO.CATG=GAIN_INFO) with information on the detector gain A cube (PRO.CATG=BP_COEFF) with the polynomial fit parameters of the detector non linearities A bad pixel map (PRO.CATG=BP_MAP_NL)
Create an object for the recipe sinfo_rec_detlin.
import cpl
sinfo_rec_detlin = cpl.Recipe("sinfo_rec_detlin")
Overwrite DRS ini parameters: (bool; default: True) [default=True].
Correct for bad lines introduced by instrument software: (bool; default: False) [default=False].
Kappa sigma value (long; default: 18) [default=18].
Filtering radii applied during median filter. Should be small (long; default: 3) [default=3].
Density of pipeline products: 0 (low), 1 (low+skycor), 2 (med-QC), 3 (high-debug+skycor) (long; default: 2) [default=2].
Order: order of the fit polynomial = number of coefficents - 1 (long; default: 2) [default=2].
Threshold Sigma Factor: threshold factor of the clean standard deviation. If the deviations of the linear polynomial coefficients exceed this threshold the corresponding pixels are declared as bad (float; default: 10.0) [default=10.0].
Non Linear Threshold (float; default: 0.5) [default=0.5].
low_rejection: percentage of rejected low intensity pixels before averaging (float; default: 10.0) [default=10.0].
high_rejection: percentage of rejected high intensity pixels before averaging (float; default: 10.0) [default=10.0].
The following code snippet shows the default settings for the available parameters.
import cpl
sinfo_rec_detlin = cpl.Recipe("sinfo_rec_detlin")
sinfo_rec_detlin.param.gen_overpar = True
sinfo_rec_detlin.param.lc_sw = False
sinfo_rec_detlin.param.lc_kappa = 18
sinfo_rec_detlin.param.lc_filt_rad = 3
sinfo_rec_detlin.param.product_density = 2
sinfo_rec_detlin.param.bp_lin_order = 2
sinfo_rec_detlin.param.bp_lin_thresh_sigma_fct = 10.0
sinfo_rec_detlin.param.bp_lin_nlin_threshold = 0.5
sinfo_rec_detlin.param.bp_lin_lo_rej = 10.0
sinfo_rec_detlin.param.bp_lin_hi_rej = 10.0
You may also set or overwrite some or all parameters by the recipe parameter param, as shown in the following example:
import cpl
sinfo_rec_detlin = cpl.Recipe("sinfo_rec_detlin")
[...]
res = sinfo_rec_detlin( ..., param = {"gen_overpar":True, "lc_sw":False})
See also
cpl.Recipe for more information about the recipe object.
Please report any problems to Andrea Modigliani. Alternatively, you may send a report to the ESO User Support Department.
This file is part of the SINFONI Instrument Pipeline Copyright (C) 2002,2003 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
Code author: Andrea Modigliani <Andrea.Modigliani@eso.org>