At 14.842 hours, block sign injections give fewer detections in corrected than raw TESS Sector 76 flux for SBSS 1232+563

We test the sensitivity of TESS Sector 76 to the known waveform of SBSS 1232+563. We fit two harmonics at 14.842 hours to public Sector 75 light curves. We inject these templates into Sector 76 residuals after pipeline processing. We change whole block signs and allow a free phase shift. We test one-day and two-day blocks with two origins. The detection threshold is the 99th percentile of each fixed-period null reference. Equal-amplitude injections give 91.77–98.27% detection in raw aperture flux and 44.44–77.56% in corrected flux. Raw flux uses fixed crowding estimates. Amplitude factors of 1.000–1.125 give at least 95% mean detection in raw flux. Corrected flux needs factors of 1.375–1.750. Thus corrected flux can often hide an unchanged template under these assumptions. Period endpoint tests give 23.87–48.16% detection in corrected flux. The two products use different templates and noise references. They share observations. The references assume sign symmetry and independent blocks. These are conditional sensitivity results. They do not establish physical signal loss or a new planet. The package preserves the input files, provenance, code, figures, numerical results, and reproduction steps.

SBSS 1232+563 · TESS · white dwarfs · signal injection · detection sensitivity · correlated noise · circumstellar debris