Derive the per-measured-qubit flip-rule failure on 21 Oct calibration-1 data (the numbers quoted in PLAN_FLIP.md, flip-readable guard).
Heuremen LLC, Wayfinder and Bones, 22 October 2026. Read-only on control_run/iqjob_<chip>.json + iqraw_<chip>.npz.
DATA: every CAL state '1' pub (both copies; register c, 156 columns), 2 x 2000 = 4000 shots per qubit; CAL state '0' likewise for the 0 cluster.
INDEXING: column = PHYSICAL qubit number (the calibration circuit measures qubit q into clbit q); measured qubits = rec['E'] (physical numbers).
CLUSTERS (as analyze_iq.py): mu0, mu1 = mean of ALL cal-0 / cal-1 shots; t = projection on mu1 - mu0; cov0 from cal-0 shots with t < 0.5,
cov1 from cal-1 shots with t > 0.5; 'inside' = Mahalanobis distance < 3.5.
RULES on each prepared-1 shot:
  PLAN  (the rule PLAN_FLIP.md quoted, and analyze_flip.py's flip rule): FAIL = inside the 0 cluster OR not inside the 1 cluster
  A     not inside the 1 cluster
  B     inside the 0 cluster (whether or not also inside 1)
  BOTH  inside both clusters
  P     reads 0 by projection (t < 0.5)
============================================================================================
ibm_kingston: cal-0 pubs [1, 22], cal-1 pubs [21, 26], 4000 prepared-1 shots per qubit, 39 measured qubits
  PLAN rule over measured qubits: mean 4.1%, median 2.6%, max 12.2%, > 20%: 0
  top 6 by PLAN       : q99 12.2%, q32 11.8%, q35 10.4%, q14 10.1%, q120 9.7%, q142 9.3%
  top 6 by A not-in-1 : q85 5.5%, q120 2.8%, q35 2.7%, q145 2.6%, q63 2.4%, q99 2.3%
  top 6 by P reads-0  : q85 4.7%, q120 3.8%, q35 3.5%, q99 3.4%, q32 3.2%, q63 2.8%
  qubit    PLAN       A       B    BOTH       P   (top 6 by PLAN rule, all columns)
     99   12.2%    2.3%   12.0%    9.8%    3.4%
     32   11.8%    1.8%   11.7%   10.0%    3.2%
     35   10.4%    2.7%   10.2%    7.8%    3.5%
     14   10.1%    1.8%    9.8%    8.3%    2.7%
    120    9.7%    2.8%    9.4%    6.9%    3.8%
    142    9.3%    1.6%    9.2%    7.8%    2.4%
============================================================================================
ibm_marrakesh: cal-0 pubs [1, 22], cal-1 pubs [21, 26], 4000 prepared-1 shots per qubit, 39 measured qubits
  PLAN rule over measured qubits: mean 9.7%, median 3.1%, max 98.9%, > 20%: 3
  top 6 by PLAN       : q82 98.9%, q100 76.8%, q119 71.4%, q138 11.3%, q135 10.5%, q92 8.7%
  top 6 by A not-in-1 : q119 45.9%, q92 8.6%, q138 4.9%, q120 4.7%, q82 4.4%, q38 3.5%
  top 6 by P reads-0  : q119 48.3%, q82 45.9%, q92 8.8%, q138 5.9%, q100 5.1%, q120 3.7%
  qubit    PLAN       A       B    BOTH       P   (top 6 by PLAN rule, all columns)
     82   98.9%    4.4%   95.2%   94.5%   45.9%
    100   76.8%    2.8%   76.4%   74.0%    5.1%
    119   71.4%   45.9%   47.8%   25.4%   48.3%
    138   11.3%    4.9%   11.0%    6.4%    5.9%
    135   10.5%    2.0%   10.3%    8.5%    3.5%
     92    8.7%    8.6%    8.0%    0.1%    8.8%
============================================================================================
ibm_fez: cal-0 pubs [1, 22], cal-1 pubs [21, 26], 4000 prepared-1 shots per qubit, 39 measured qubits
  PLAN rule over measured qubits: mean 5.5%, median 3.4%, max 24.0%, > 20%: 1
  top 6 by PLAN       : q149 24.0%, q63 19.8%, q32 16.9%, q135 16.0%, q53 13.2%, q60 13.0%
  top 6 by A not-in-1 : q11 5.4%, q149 5.1%, q63 5.1%, q89 3.5%, q0 2.7%, q32 2.6%
  top 6 by P reads-0  : q149 7.8%, q63 7.1%, q11 5.8%, q32 5.5%, q89 4.1%, q0 3.3%
  qubit    PLAN       A       B    BOTH       P   (top 6 by PLAN rule, all columns)
    149   24.0%    5.1%   23.8%   18.9%    7.8%
     63   19.8%    5.1%   19.5%   14.8%    7.1%
     32   16.9%    2.6%   16.7%   14.2%    5.5%
    135   16.0%    1.3%   15.7%   14.7%    3.0%
     53   13.2%    1.5%   13.1%   11.7%    2.8%
     60   13.0%    1.8%   12.8%   11.2%    3.2%