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hawki_linearity_analyse - HAWKI linearity recipe


esorex hawki_linearity_analyse [OPTIONS] FILE.sof


hawki_linearity_analyse -- HAWKI detector linearity recipe.

Check the linearity of the HAWKI detectors on a pixel by pixel basis The program accepts the following files in the SOF:

Tag Description

DARK_DETCHECK A list of dark images
FLAT_LAMP_DETCHECK A list of dome flat images All of the above are required. The should be a dark frame for each DIT/NDITcombination used for the dome flats


Polynomial order to fit (int; default: 3). The full name of this option for the EsoRex configuration file is hawki.hawki_linearity_analyse.order [default = 3].
Fit zeroth order term? (bool; default: False). The full name of this option for the EsoRex configuration file is hawki.hawki_linearity_analyse.fitzero [default = False].
Maximum allowable value of reduced chisq? (float; default: 5.0). The full name of this option for the EsoRex configuration file is hawki.hawki_linearity_analyse.rchithr [default = 5.0].
Saturation limit? (float; default: 65535.0). The full name of this option for the EsoRex configuration file is hawki.hawki_linearity_analyse.satlim [default = 65535.0].
Reference flux level for NL check (float; default: 10000.0). The full name of this option for the EsoRex configuration file is hawki.hawki_linearity_analyse.reflev [default = 10000.0].

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.


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

An overview over the existing ESO pipelines can be found on the web page

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 for further information.

The other recipes of the hawki pipeline are hawki_cal_dark(7), hawki_cal_distortion(7), hawki_cal_flat(7), hawki_cal_zpoint(7), hawki_dark_combine(7), hawki_detector_noise(7), hawki_sci_jitter(7), hawki_science_postprocess(7), hawki_science_process(7), hawki_standard_process(7), hawki_step_apply_dist(7), hawki_step_basic_calib(7), hawki_step_combine(7), hawki_step_compute_bkg(7), hawki_step_detect_obj(7), hawki_step_photom_2mass(7), hawki_step_refine_offsets(7), hawki_step_stats(7), hawki_step_stitch(7), hawki_step_subtract_bkg(7), hawki_tec_filtchk(7), hawki_twilight_flat_combine(7), hawki_util_gendist(7), hawki_util_stdstars(7)


hawki_linearity_analyse 2.4.11


Jim Lewis <>


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


This file is part of the HAWKI Instrument Pipeline Copyright (C) 2015 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

2.4.11 hawki_linearity_analyse