The recommended way of handling the situation described in https://www.systemticks.de/2020/06/09/dlt-parser-from-kaitai.html#known-issues-and-possible-improvements using KSY

systemticks-payload-typeinfo.yml

# listing 4
seq:
  - id: payload
    type: type_info
    size: 4 # not strictly necessary, but it's safer to wrap the `type_info` into the substream like this,
            # because if the bitfields `types/type_info/seq` wouldn't fill the whole 4 bytes, it would still work
            # (see https://doc.kaitai.io/user_guide.html#_streams_and_substreams)
types:
  type_info:
    seq:
      - id: floa
        type: b1 # note that the value of the `b1` field used like this will be automatically translated to boolean type (`true` or `false`),
                 # so you can save those `== 1` comparisons
      - id: uint
        type: b1 # equivalent of (inforaw & 0b01000000000000000000000000000000) >> 30 == 1
      - id: sint
        type: b1 # equivalent of (inforaw & 0b00100000000000000000000000000000) >> 29 == 1
      - id: buul
        type: b1 # equivalent of (inforaw & 0b00010000000000000000000000000000) >> 28 == 1
      - id: tyle
        type: b4 # (inforaw & 0b00001111000000000000000000000000) >> 24
      # ...