Signal deconvolution from exponential and linear tail I would like to deconvolve the signal shown in the plot below from its linearly decaying tail and the exponential levelling. That means that after the deconvolutin, the tail should be at a constant value of ~410 mV. Does anyone have an idea how to approach this problem?
I uploaded the data here:
https://nextcloud.mpp.mpg.de/nextcloud/index.php/s/RwXEzEa6bxHTByR

Thank you very much in advance!
You probably can't. If I interpret your description correctly, this is the unit step response of your system. This looks very much like the unit step response of a high pass filter, that means the system is filtering out exactly the frequency that you want (which is DC or 0 Hz).
You may be better off creating a parametric model of your system response and try to do a weighted least square error fit of the data.