Add hint on how to manually inspect statistics packets

docs/source/faq.rst

@@ -147,6 +147,17 @@ Let's see where the packets get stuck. Let us assume your MTU=9000 network inter
 
 - If still on error was found, you've likely hit a bug in our software.
 
+Inspecting SST/XST packets
+``````````````````````````````````````````````````````````````````````````````````````````````````````````````
+
+The fields ``sst.last_packet_R`` and ``xst.last_packet_R`` contain a raw dump of the last received packet for that statistic. Parsing these packets is aided greatly by using our packet parser::
+
+  from tangostationcontrol.devices.sdp.statistics_packet import SSTPacket, XSTPacket
+
+  # print the headers of the last received packets
+  print(SSTPacket(bytes(sst.last_packet_R)).header())
+  print(XSTPacket(bytes(xst.last_packet_R)).header())
+
 Other containers
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