A fixed TESS flux test rejects 6.86% of 10–1000-day periods at TOI-6672 for four-hour cores with at least 0.15% loss

We test fixed repeat periods for the known event at TOI-6672.01, also called TIC 331644554 and BD+46 3543. We use four public TESS SPOC light curves from sectors 16, 56, 76, and 83. The reference center can range from BTJD 1757.000 to 1757.090. Each repeat must have a continuous four-hour core with at least 0.15% loss in both archived SAP and PDCSAP flux. All event loss must lie within seven hours of its center. Bright one-hour measurements must pass eight local baseline controls with an empirical noise term and a five-sigma margin. This margin is an operational rule, not a calibrated confidence limit. Two bin grids give 738 selected measurements. A continuous interval test rejects 67.963394 days, or 6.864989%, of the 10–1000-day period range. Later sectors add 66.651904 days beyond Sector 16. The rejected log-period fraction is 27.451778%. These fractions are map measures, not planet probabilities. A secondary 1000–2000-day test rejects 17.126860 days. The rough prior estimates of 450 and 947 days remain open. Source checks, independent baseline and interval checks, archived-flux injections, and a second offline run verify the numerical result. The package preserves native data, source hashes, code, figures, and exact interval maps. The result depends on the stated depth, duration, timing, baseline, and noise rules. It does not establish a new planet, an orbital period, or the origin of the known dip.

TOI-6672 · TIC 331644554 · BD+46 3543 · TESS · single transit · period exclusion · stellar variability · reproducible astronomy