243 lines
14 KiB
Python
Executable File
243 lines
14 KiB
Python
Executable File
#!/usr/bin/python3
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#-*- coding:utf-8 -*-
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"""
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Main script where are progressively added the steps for the FOC pipeline reduction.
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"""
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#Project libraries
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import sys
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import numpy as np
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from copy import deepcopy
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import lib.fits as proj_fits #Functions to handle fits files
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import lib.reduction as proj_red #Functions used in reduction pipeline
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import lib.plots as proj_plots #Functions for plotting data
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from lib.convex_hull import image_hull
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from lib.deconvolve import from_file_psf
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import matplotlib.pyplot as plt
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from astropy.wcs import WCS
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##### User inputs
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## Input and output locations
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#globals()['data_folder'] = "../data/NGC1068_x274020/"
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#globals()['infiles'] = ['x274020at_c0f.fits','x274020bt_c0f.fits','x274020ct_c0f.fits',
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# 'x274020dt_c0f.fits','x274020et_c0f.fits','x274020ft_c0f.fits',
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# 'x274020gt_c0f.fits','x274020ht_c0f.fits','x274020it_c0f.fits']
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##psf_file = 'NGC1068_f253m00.fits'
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#globals()['plots_folder'] = "../plots/NGC1068_x274020/"
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#globals()['data_folder'] = "../data/IC5063_x3nl030/"
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#globals()['infiles'] = ['x3nl0301r_c0f.fits','x3nl0302r_c0f.fits','x3nl0303r_c0f.fits']
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##psf_file = 'IC5063_f502m00.fits'
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#globals()['plots_folder'] = "../plots/IC5063_x3nl030/"
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#globals()['data_folder'] = "../data/NGC1068_x14w010/"
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#globals()['infiles'] = ['x14w0101t_c0f.fits','x14w0102t_c0f.fits','x14w0103t_c0f.fits',
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# 'x14w0104t_c0f.fits','x14w0105p_c0f.fits','x14w0106t_c0f.fits']
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#globals()['plots_folder'] = "../plots/NGC1068_x14w010/"
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globals()['data_folder'] = "../data/3C405_x136060/"
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globals()['infiles'] = ['x1360601t_c0f.fits','x1360602t_c0f.fits','x1360603t_c0f.fits']
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globals()['plots_folder'] = "../plots/3C405_x136060/"
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#globals()['data_folder'] = "../data/CygnusA_x43w0/"
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#globals()['infiles'] = ['x43w0101r_c0f.fits', 'x43w0102r_c0f.fits', 'x43w0103r_c0f.fits',
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# 'x43w0104r_c0f.fits', 'x43w0105r_c0f.fits', 'x43w0106r_c0f.fits',
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# 'x43w0107r_c0f.fits', 'x43w0108r_c0f.fits', 'x43w0109r_c0f.fits']
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#globals()['infiles'] = ['x43w0201r_c0f.fits', 'x43w0202r_c0f.fits', 'x43w0203r_c0f.fits',
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# 'x43w0204r_c0f.fits', 'x43w0205r_c0f.fits', 'x43w0206r_c0f.fits']
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#globals()['plots_folder'] = "../plots/CygnusA_x43w0/"
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#globals()['data_folder'] = "../data/3C109_x3mc010/"
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#globals()['infiles'] = ['x3mc0101m_c0f.fits','x3mc0102m_c0f.fits','x3mc0103m_c0f.fits']
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#globals()['plots_folder'] = "../plots/3C109_x3mc010/"
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#globals()['data_folder'] = "../data/MKN463_x2rp030/"
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#globals()['infiles'] = ['x2rp0201t_c0f.fits', 'x2rp0202t_c0f.fits', 'x2rp0203t_c0f.fits',
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# 'x2rp0204t_c0f.fits', 'x2rp0205t_c0f.fits', 'x2rp0206t_c0f.fits',
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# 'x2rp0207t_c0f.fits', 'x2rp0301t_c0f.fits', 'x2rp0302t_c0f.fits',
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# 'x2rp0303t_c0f.fits', 'x2rp0304t_c0f.fits', 'x2rp0305t_c0f.fits',
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# 'x2rp0306t_c0f.fits', 'x2rp0307t_c0f.fits']
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#globals()['plots_folder'] = "../plots/MKN463_x2rp030/"
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#globals()['data_folder'] = "../data/PG1630+377_x39510/"
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#globals()['infiles'] = ['x3990201m_c0f.fits', 'x3990205m_c0f.fits', 'x3995101r_c0f.fits',
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# 'x3995105r_c0f.fits', 'x3995109r_c0f.fits', 'x3995201r_c0f.fits',
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# 'x3995205r_c0f.fits', 'x3990202m_c0f.fits', 'x3990206m_c0f.fits',
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# 'x3995102r_c0f.fits', 'x3995106r_c0f.fits', 'x399510ar_c0f.fits',
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# 'x3995202r_c0f.fits','x3995206r_c0f.fits']
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#globals()['plots_folder'] = "../plots/PG1630+377_x39510/"
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#globals()['data_folder'] = "../data/MKN3_x3nl010/"
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#globals()['infiles'] = ['x3nl0101r_c0f.fits','x3nl0102r_c0f.fits','x3nl0103r_c0f.fits']
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#globals()['plots_folder'] = "../plots/MKN3_x3nl010/"
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#globals()['data_folder'] = "../data/MKN3_x3md010/"
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#globals()['infiles'] = ['x3md0101r_c0f.fits', 'x3md0102r_c0f.fits', 'x3md0103r_c0f.fits']
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#globals()['infiles'] = ['x3md0104r_c0f.fits', 'x3md0105r_c0f.fits', 'x3md0106r_c0f.fits']
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#globals()['plots_folder'] = "../plots/MKN3_x3md010/"
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#globals()['data_folder'] = "../data/MKN78_x3nl020/"
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#globals()['infiles'] = ['x3nl0201r_c0f.fits','x3nl0202r_c0f.fits','x3nl0203r_c0f.fits']
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#globals()['plots_folder'] = "../plots/MKN78_x3nl020/"
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#globals()['data_folder'] = "../data/3C273_x0u20/"
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#globals()['infiles'] = ['x0u20101t_c0f.fits','x0u20102t_c0f.fits','x0u20103t_c0f.fits',
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# 'x0u20104t_c0f.fits','x0u20105t_c0f.fits','x0u20106t_c0f.fits',
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# 'x0u20201t_c0f.fits','x0u20202t_c0f.fits','x0u20203t_c0f.fits',
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# 'x0u20204t_c0f.fits','x0u20205t_c0f.fits','x0u20206t_c0f.fits',
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# 'x0u20301t_c0f.fits','x0u20302t_c0f.fits','x0u20303t_c0f.fits',
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# 'x0u20304t_c0f.fits','x0u20305t_c0f.fits','x0u20306t_c0f.fits']
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#globals()['plots_folder'] = "../plots/3C273_x0u20/"
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#BEWARE: 5 observations separated by 1 year each (1995, 1996, 1997, 1998, 1999)
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#globals()['data_folder'] = "../data/M87/POS1/"
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#globals()['infiles'] = ['x2py010ct_c0f.fits','x2py010dt_c0f.fits','x2py010et_c0f.fits','x2py010ft_c0f.fits'] #1995
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#globals()['infiles'] = ['x3be010ct_c0f.fits','x3be010dt_c0f.fits','x3be010et_c0f.fits','x3be010ft_c0f.fits'] #1996
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#globals()['infiles'] = ['x43r010km_c0f.fits','x43r010mm_c0f.fits','x43r010om_c0f.fits','x43r010rm_c0f.fits'] #1997
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#globals()['infiles'] = ['x43r110kr_c0f.fits','x43r110mr_c0f.fits','x43r110or_c0f.fits','x43r110rr_c0f.fits'] #1998
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#globals()['infiles'] = ['x43r210kr_c0f.fits','x43r210mr_c0f.fits','x43r210or_c0f.fits','x43r210rr_c0f.fits'] #1999
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#globals()['plots_folder'] = "../plots/M87/POS1/"
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#BEWARE: 5 observations separated by 1 year each (1995, 1996, 1997, 1998, 1999)
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#globals()['data_folder'] = "../data/M87/POS3/"
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#globals()['infiles'] = ['x2py030at_c0f.fits','x2py030bt_c0f.fits','x2py030ct_c0f.fits','x2py0309t_c0f.fits'] #1995
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#globals()['infiles'] = ['x3be030at_c0f.fits','x3be030bt_c0f.fits','x3be030ct_c0f.fits','x3be0309t_c0f.fits'] #1996
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#globals()['infiles'] = ['x43r030em_c0f.fits','x43r030gm_c0f.fits','x43r030im_c0f.fits','x43r030lm_c0f.fits'] #1997
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#globals()['infiles'] = ['x43r130er_c0f.fits','x43r130fr_c0f.fits','x43r130ir_c0f.fits','x43r130lr_c0f.fits'] #1998
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#globals()['infiles'] = ['x43r230er_c0f.fits','x43r230fr_c0f.fits','x43r230ir_c0f.fits','x43r230lr_c0f.fits'] #1999
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#globals()['plots_folder'] = "../plots/M87/POS3/"
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def main():
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## Reduction parameters
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# Deconvolution
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deconvolve = False
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if deconvolve:
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psf = 'gaussian' #Can be user-defined as well
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#psf = from_file_psf(data_folder+psf_file)
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psf_FWHM = 0.15
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psf_scale = 'arcsec'
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psf_shape=(25,25)
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iterations = 5
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algo="richardson"
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# Initial crop
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display_crop = False
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# Error estimation
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error_sub_shape = (10,10)
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display_error = False
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# Data binning
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rebin = True
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if rebin:
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pxsize = 0.10
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px_scale = 'arcsec' #pixel, arcsec or full
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rebin_operation = 'sum' #sum or average
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# Alignement
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align_center = 'image' #If None will align image to image center
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display_data = False
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# Smoothing
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smoothing_function = 'combine' #gaussian_after, weighted_gaussian_after, gaussian, weighted_gaussian or combine
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smoothing_FWHM = 0.20 #If None, no smoothing is done
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smoothing_scale = 'arcsec' #pixel or arcsec
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# Rotation
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rotate_stokes = True #rotation to North convention can give erroneous results
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rotate_data = False #rotation to North convention can give erroneous results
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# Final crop
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crop = False #Crop to desired ROI
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final_display = True
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# Polarization map output
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figname = '3C405_FOC' #target/intrument name
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figtype = '_combine_FWHM020' #additionnal informations
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SNRp_cut = 5. #P measurments with SNR>3
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SNRi_cut = 50. #I measurments with SNR>30, which implies an uncertainty in P of 4.7%.
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step_vec = 1 #plot all vectors in the array. if step_vec = 2, then every other vector will be plotted
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# if step_vec = 0 then all vectors are displayed at full length
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##### Pipeline start
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## Step 1:
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# Get data from fits files and translate to flux in erg/cm²/s/Angstrom.
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data_array, headers = proj_fits.get_obs_data(infiles, data_folder=data_folder, compute_flux=True)
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# Crop data to remove outside blank margins.
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data_array, error_array, headers = proj_red.crop_array(data_array, headers, step=5, null_val=0., inside=True, display=display_crop, savename=figname, plots_folder=plots_folder)
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# Deconvolve data using Richardson-Lucy iterative algorithm with a gaussian PSF of given FWHM.
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if deconvolve:
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data_array = proj_red.deconvolve_array(data_array, headers, psf=psf, FWHM=psf_FWHM, scale=psf_scale, shape=psf_shape, iterations=iterations, algo=algo)
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# Rotate data to have North up
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if rotate_data:
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data_mask = np.ones(data_array.shape[1:]).astype(bool)
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alpha = headers[0]['orientat']
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mrot = np.array([[np.cos(-alpha), -np.sin(-alpha)], [np.sin(-alpha), np.cos(-alpha)]])
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data_array, error_array, data_mask, headers = proj_red.rotate_data(data_array, error_array, data_mask, headers, -alpha)
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# Align and rescale images with oversampling.
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data_array, error_array, headers, data_mask = proj_red.align_data(data_array, headers, error_array=error_array, upsample_factor=10, ref_center=align_center, return_shifts=False)
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# Rebin data to desired pixel size.
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if rebin:
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if px_scale.lower() in ['full','integrate']:
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data_array, error_array, headers = proj_red.get_error(data_array, headers, error_array, data_mask, sub_shape=error_sub_shape, display=display_error, savename=figname+"_errors", plots_folder=plots_folder)
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data_array, error_array, headers, Dxy, data_mask = proj_red.rebin_array(data_array, error_array, headers, pxsize=pxsize, scale=px_scale, operation=rebin_operation, data_mask=data_mask)
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# Estimate error from data background, estimated from sub-image of desired sub_shape.
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if px_scale.lower() not in ['full','integrate']:
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data_array, error_array, headers = proj_red.get_error(data_array, headers, error_array, data_mask, sub_shape=error_sub_shape, display=display_error, savename=figname+"_errors", plots_folder=plots_folder)
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#Plot array for checking output
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if display_data and px_scale.lower() not in ['full','integrate']:
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vertex = image_hull(data_mask,step=5,null_val=0.,inside=True)
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shape = np.array([vertex[1]-vertex[0],vertex[3]-vertex[2]])
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rectangle = [vertex[2], vertex[0], shape[1], shape[0], 0., 'g']
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proj_plots.plot_obs(data_array, headers, vmin=data_array.min(), vmax=data_array.max(), rectangle =[rectangle,]*data_array.shape[0], savename=figname+"_center_"+align_center, plots_folder=plots_folder)
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## Step 2:
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# Compute Stokes I, Q, U with smoothed polarized images
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# SMOOTHING DISCUSSION :
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# FWHM of FOC have been estimated at about 0.03" across 1500-5000 Angstrom band, which is about 2 detector pixels wide
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# see Jedrzejewski, R.; Nota, A.; Hack, W. J., A Comparison Between FOC and WFPC2
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# Bibcode : 1995chst.conf...10J
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I_stokes, Q_stokes, U_stokes, Stokes_cov = proj_red.compute_Stokes(data_array, error_array, data_mask, headers, FWHM=smoothing_FWHM, scale=smoothing_scale, smoothing=smoothing_function)
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## Step 3:
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# Rotate images to have North up
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if rotate_stokes:
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I_stokes, Q_stokes, U_stokes, Stokes_cov, data_mask, headers = proj_red.rotate_Stokes(I_stokes, Q_stokes, U_stokes, Stokes_cov, data_mask, headers, SNRi_cut=None)
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# Compute polarimetric parameters (polarization degree and angle).
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P, debiased_P, s_P, s_P_P, PA, s_PA, s_PA_P = proj_red.compute_pol(I_stokes, Q_stokes, U_stokes, Stokes_cov, headers)
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## Step 4:
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# Save image to FITS.
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Stokes_test = proj_fits.save_Stokes(I_stokes, Q_stokes, U_stokes, Stokes_cov, P, debiased_P, s_P, s_P_P, PA, s_PA, s_PA_P, headers, data_mask, figname+figtype, data_folder=data_folder, return_hdul=True)
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data_mask = Stokes_test[-1].data.astype(bool)
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## Step 5:
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# crop to desired region of interest (roi)
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if crop:
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figtype += "_crop"
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stokescrop = proj_plots.crop_Stokes(deepcopy(Stokes_test))
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stokescrop.crop()
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stokescrop.writeto(data_folder+figname+figtype+".fits")
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Stokes_test, data_mask = stokescrop.hdul_crop, stokescrop.data_mask
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# Plot polarization map (Background is either total Flux, Polarization degree or Polarization degree error).
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if px_scale.lower() not in ['full','integrate'] and final_display:
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype, plots_folder=plots_folder)
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_I", plots_folder=plots_folder, display='Intensity')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_P_flux", plots_folder=plots_folder, display='Pol_Flux')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_P", plots_folder=plots_folder, display='Pol_deg')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_I_err", plots_folder=plots_folder, display='I_err')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_P_err", plots_folder=plots_folder, display='Pol_deg_err')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_SNRi", plots_folder=plots_folder, display='SNRi')
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype+"_SNRp", plots_folder=plots_folder, display='SNRp')
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elif final_display:
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proj_plots.polarization_map(deepcopy(Stokes_test), data_mask, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut, step_vec=step_vec, savename=figname+figtype, plots_folder=plots_folder, display='integrate')
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elif px_scale.lower() not in ['full', 'integrate']:
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pol_map = proj_plots.pol_map(Stokes_test, SNRp_cut=SNRp_cut, SNRi_cut=SNRi_cut)
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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