Dead pixels map

The DeadPixelsMap tool creates dead-pixel maps for use in ExoSim. Give it the number of dead pixels in the channel and it scatters them at random over the focal plane.

Set the number in the tool input parameters:

<channel> channel_name
    <detector>
        <dp_mean> 10 </dp_mean>
    </detector>
</channel>

Then run the tool:

import exosim.tools as tools

tools.DeadPixelsMap(options_file='tools_input_example.xml',
                    output='data/payload')

It writes one .csv file per channel with the coordinates of the dead pixels. The result looks like this:

If the exact number of dead pixels is not known, add its uncertainty:

<channel> channel_name
    <detector>
        <dp_mean> 10 </dp_mean>
        <dp_sigma> 1 </dp_sigma>
    </detector>
</channel>

The tool then draws the number of dead pixels from a normal distribution centred on dp_mean with standard deviation dp_sigma.

The .csv files can be passed to ApplyDeadPixelsMap, described in Dead pixels map.