make_darkmaps

Module make_darkmaps

Evolve the CCD, generating fake dark current map using the smoothed-broken-powerlaw spectral model fitting (from fit_evol.py).

First use the dates of actual dark current cals (for direct comparison), then go once per year.

Functions

[hide private]

plot_overlays()
Plot 1999223 actual, degradation model, 2008273 actual and 2008273 predicted

source code

plot_darkcal(darkfile, Tccd, plotsymcol='-', label=None, step=None)
Plot a real dark cal, scaled from temp Tccd to -19 source code

plot_dark(dark, label=None, plotsymcol='.', step=False)
Plot dark cal data as a histogram. source code

make_steps(x, y)
For x as bin edges (n+1 vals) and y as bin vals (n vals), make the corresponding arrays that can be plotted as a line.

source code

plot_warm_frac(thresh, warmpix)

source code

make_darkmaps(case='nominal', initial='pristine')
Make dark current maps by degrading the CCD using the best-fit model from fit_evol.py source code

Variables

[hide private]

npix = 1048576.0

secs2k = 63072064.184

sec2year = 3.1688087814e-08

yeardays = 365.25

alldarkcals = recarray([('1999:223', 11.9, 8.9000000000000004,...

Function Details

[hide private]

plot_darkcal(darkfile, Tccd, plotsymcol=`'-'`, label=None, step=None)

source code

Plot a real dark cal, scaled from temp Tccd to -19

Parameters:

darkfile - FITS file containing a dark current map image.
Tccd - CCD temperature (degC)
plotsymcol - Matplotlib symbol/color specifierr
label - Matplotlib plot label
step - Matplotlib plot step specifier

Returns:

(dark, x, y)

dark: Dark current map (scaled to temperature Tccd)
x, y: Histogram values plotted

plot_dark(dark, label=None, plotsymcol=`'.'`, step=False)

source code

Plot dark cal data as a histogram. 'dark' is a flat array.

Variables Details

[hide private]

alldarkcals

Value:

recarray([('1999:223', 11.9, 8.9000000000000004, 10.1, 3495, 1778, 4, 
3, -10),
       ('2000:326', 22.199999999999999, 11.300000000000001, 11.8000000
00000001, 34097, 18442, 28, 10, -10),
       ('2001:060', 23.899999999999999, 12.4, 12.800000000000001, 3738
1, 19962, 27, 13, -10),
       ('2002:057', 29.199999999999999, 12.5, 12.9, 56671, 29657, 46, 
19, -10),
...

Module make_darkmaps

plot_darkcal(darkfile, Tccd, plotsymcol='-', label=None, step=None)

plot_dark(dark, label=None, plotsymcol='.', step=False)

alldarkcals

plot_darkcal(darkfile, Tccd, plotsymcol=`'-'`, label=None, step=None)

plot_dark(dark, label=None, plotsymcol=`'.'`, step=False)