relative to the observed redshift,
with a time delay uniformly distributed between td_min and td_max.
The time delay is computed using the cosmology provided by astropy.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>input_args</strong><span class="classifier">list</span></dt><dd><dl class="simple">
<dt>z<span class="classifier">float</span></dt><dd><p>observed redshift</p>
</dd>
<dt>idx<span class="c