diff --git a/notebooks/single_baseline_postprocessing_and_pspec.ipynb b/notebooks/single_baseline_postprocessing_and_pspec.ipynb
index 4c2e173..c9e62ab 100644
--- a/notebooks/single_baseline_postprocessing_and_pspec.ipynb
+++ b/notebooks/single_baseline_postprocessing_and_pspec.ipynb
@@ -7,7 +7,7 @@
    "source": [
     "# Single Baseline Filtering and Power Spectrum Estimation\n",
     "\n",
-    "**by Josh Dillon, Bobby Pascua, and Mike Wilensky**, last updated November 5, 2024\n",
+    "**by Josh Dillon, Bobby Pascua, and Mike Wilensky**, last updated January 6, 2025\n",
     "\n",
     "This notebook is designed to take a single redundantly-averaged unique baseline (typically after LST-binning) and push it through all the way to the power spectrum. It operates on single files that contain a single baseline for all LSTs and both `'ee'` and `'nn'` polarizations. It then can:\n",
     "* Throw out highly flagged times and/or channels\n",
@@ -787,30 +787,6 @@
     "                nsamples[ap + (pstokes,)] = combined_nsamples"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "79e04ba6",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# TODO: graduate this function into hera_cal\n",
-    "\n",
-    "def deinterleave_datacontainer(dc, ninterleave=NINTERLEAVE, tslice=slice(None)):\n",
-    "    '''Breaks datacontainers into ninterleave separate containers and returns a list of deinterleaved datacontainers.\n",
-    "    Also updates .times and .lsts attributes. Integrations at the end that do not evenly divide are dropped.'''\n",
-    "    deint_dcs = []\n",
-    "    for i in range(ninterleave):\n",
-    "        islice = slice(i, (len(dc.times[tslice]) // ninterleave) * ninterleave, ninterleave)  # ensures all slices have same shape\n",
-    "        new_dc = copy.deepcopy(dc)\n",
-    "        new_dc.times = dc.times[tslice][islice]\n",
-    "        new_dc.lsts = dc.lsts[tslice][islice]\n",
-    "        for bl in new_dc:\n",
-    "            new_dc[bl] = dc[bl][tslice, :][islice, :]\n",
-    "        deint_dcs.append(new_dc)\n",
-    "    return deint_dcs"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1067,10 +1043,10 @@
    "outputs": [],
    "source": [
     "# perform deinterleaving\n",
-    "deint_filt_data = deinterleave_datacontainer(filt_data, ninterleave=NINTERLEAVE, tslice=tslice)\n",
-    "deint_flags = deinterleave_datacontainer(filt_flags, ninterleave=NINTERLEAVE, tslice=tslice)\n",
-    "deint_nsamples = deinterleave_datacontainer(filt_nsamples, ninterleave=NINTERLEAVE, tslice=tslice)\n",
-    "deint_wgts = deinterleave_datacontainer(time_filt_wgts, ninterleave=NINTERLEAVE, tslice=tslice)"
+    "deint_filt_data = filt_data.deinterleave(NINTERLEAVE, tslice=tslice)\n",
+    "deint_flags = filt_flags.deinterleave(NINTERLEAVE, tslice=tslice)\n",
+    "deint_nsamples = filt_nsamples.deinterleave(NINTERLEAVE, tslice=tslice)\n",
+    "deint_wgts = time_filt_wgts.deinterleave(NINTERLEAVE, tslice=tslice)"
    ]
   },
   {