ACA Magnitude Statistics

2025:348:18:50:27.570 Update Report

Time range 2025:258:18:50:27.339 – 2025:348:18:50:27.339
Stars 51
Failures 0

Stars

AGASC ID Last Obs nobs nbad nfail fok fmag est ok 3 f5 arcsec magcatalog magobs δmag cat δmag/σmag δmag δσ color
76815896 2025:269 10 2 99.9% 99.9% 100.0% 8.09 ± 0.16 7.99 ± 0.11 -0.10 -0.61 – – 4.54
76816336 2025:269 16 2 99.6% 99.6% 100.0% 8.64 ± 0.02 8.67 ± 0.04 0.03 1.48 – – 0.94
76816448 2025:269 12 2 99.7% 99.6% 100.0% 9.18 ± 0.02 9.21 ± 0.04 0.03 1.39 – – 1.45
136971792 2025:291 4 1 100.0% 100.0% 100.0% 7.79 ± 0.02 7.80 ± 0.03 0.01 0.72 – – 1.36
137367232 2025:291 2 1 100.0% 100.0% 100.0% 7.98 ± 0.02 8.01 ± 0.03 0.03 1.51 – – 2.49
224527424 2025:271 2 1 99.7% 99.7% 99.9% 7.85 ± 0.02 7.83 ± 0.03 -0.02 -0.88 – – 1.21
224528320 2025:271 4 1 100.0% 99.9% 100.0% 8.41 ± 0.02 8.43 ± 0.03 0.02 0.83 – – 2.39
224528328 2025:271 2 1 99.2% 99.2% 100.0% 8.32 ± 0.02 8.33 ± 0.03 0.01 0.47 – – 1.23
224528984 2025:271 6 1 99.9% 99.9% 100.0% 8.95 ± 0.02 8.96 ± 0.03 0.01 0.44 – – 0.81
224529264 2025:271 2 1 100.0% 100.0% 100.0% 6.89 ± 0.02 6.90 ± 0.03 0.00 0.19 – – 0.44
224529968 2025:271 2 1 100.0% 100.0% 100.0% 7.17 ± 0.02 7.17 ± 0.03 -0.00 -0.00 – – 1.68
263462424 2025:334 15 1 99.7% 99.7% 100.0% 8.88 ± 0.02 8.92 ± 0.03 0.03 1.62 – – 1.19
263464240 2025:334 23 1 99.0% 98.7% 100.0% 9.57 ± 0.02 9.59 ± 0.05 0.02 1.02 – – 1.25
473830528 2025:341 2 1 99.8% 99.8% 100.0% 8.50 ± 0.02 8.52 ± 0.03 0.02 0.94 – – 1.39
473831552 2025:341 2 1 98.7% 97.5% 99.7% 7.84 ± 0.05 7.87 ± 0.03 0.03 0.54 – – 3.16
473838488 2025:341 2 1 99.0% 98.7% 100.0% 7.71 ± 0.02 7.72 ± 0.03 0.02 0.81 – – 2.00
473848264 2025:341 2 1 98.1% 98.1% 99.0% 9.05 ± 0.02 9.00 ± 0.03 -0.05 -2.71 – – 0.08
475533392 2025:341 2 1 99.9% 99.9% 100.0% 8.16 ± 0.02 8.18 ± 0.03 0.02 1.02 – – -0.07
475536856 2025:341 2 1 100.0% 100.0% 100.0% 6.08 ± 0.02 6.09 ± 0.03 0.00 0.22 – – 1.35
519316320 2025:270 4 1 99.8% 99.8% 100.0% 8.10 ± 0.02 8.13 ± 0.03 0.03 1.30 – – 1.14
554839376 2025:270 11 1 100.0% 100.0% 100.0% 7.37 ± 0.02 7.38 ± 0.03 0.01 0.61 – – 0.47
554842440 2025:270 8 1 99.9% 99.9% 100.0% 8.15 ± 0.02 8.15 ± 0.04 0.00 0.06 – – 0.14
556547464 2025:270 2 1 100.0% 100.0% 100.0% 6.16 ± 0.02 6.20 ± 0.03 0.04 1.76 – – 0.59
612630664 2025:269 4 1 99.9% 99.9% 100.0% 8.85 ± 0.02 8.85 ± 0.03 0.00 0.04 – – 1.23
612633288 2025:269 4 1 99.9% 99.9% 100.0% 8.50 ± 0.02 8.51 ± 0.03 0.01 0.26 – – 1.22
657329224 2025:269 4 2 99.9% 99.9% 100.0% 6.94 ± 0.02 6.95 ± 0.03 0.02 0.85 – – 2.12
657330416 2025:269 3 1 98.3% 98.2% 100.0% 9.03 ± 0.02 9.06 ± 0.04 0.04 1.76 – – 1.41
657330704 2025:269 3 1 98.3% 97.0% 100.0% 9.03 ± 0.02 9.10 ± 0.04 0.07 3.38 – – 0.30
657332648 2025:269 4 2 99.7% 99.7% 100.0% 7.30 ± 0.02 7.33 ± 0.03 0.03 1.42 – – 1.57
657333120 2025:269 4 2 98.9% 98.9% 100.0% 8.33 ± 0.02 8.35 ± 0.03 0.02 1.24 – – 0.32
659031528 2025:269 3 2 100.0% 100.0% 100.0% 6.92 ± 0.02 6.93 ± 0.03 0.00 0.04 – – 1.42
659033488 2025:269 2 1 100.0% 100.0% 100.0% 8.85 ± 0.02 8.90 ± 0.03 0.05 2.39 – – 1.55
688392144 2025:269 6 2 100.0% 100.0% 100.0% 6.44 ± 0.02 6.47 ± 0.03 0.02 1.11 – – 1.80
688393808 2025:269 7 2 98.2% 96.7% 100.0% 9.79 ± 0.02 9.77 ± 0.05 -0.02 -1.03 – – 1.24
688394320 2025:269 6 2 99.6% 98.8% 100.0% 9.42 ± 0.02 9.43 ± 0.04 0.01 0.44 – – 1.41
688394968 2025:269 6 2 98.9% 97.9% 99.9% 9.95 ± 0.02 9.91 ± 0.04 -0.04 -1.83 – – 1.45
688397848 2025:269 20 2 99.5% 99.5% 100.0% 8.59 ± 0.02 8.60 ± 0.04 0.01 0.46 – – 0.07
743179928 2025:270 8 1 99.3% 99.3% 100.0% 9.12 ± 0.02 9.11 ± 0.04 -0.01 -0.32 – – 0.98
743184440 2025:270 6 1 99.9% 99.9% 100.0% 8.41 ± 0.02 8.43 ± 0.03 0.02 1.06 – – 1.59
743184544 2025:270 3 1 95.4% 95.3% 99.9% 9.40 ± 0.02 9.42 ± 0.04 0.02 0.93 – – 2.07
743312400 2025:270 4 1 99.9% 99.9% 100.0% 8.09 ± 0.02 8.10 ± 0.03 0.01 0.51 – – 1.78
743316064 2025:270 5 1 99.8% 99.8% 100.0% 9.17 ± 0.03 8.82 ± 0.03 -0.35 -11.58 – – 0.68
778962160 2025:269 2 1 100.0% 99.6% 100.0% 8.17 ± 0.02 8.18 ± 0.03 0.01 0.65 – – 1.25
778962272 2025:269 5 1 99.1% 99.1% 100.0% 8.70 ± 0.02 8.72 ± 0.03 0.02 0.77 – – 1.42
778965808 2025:269 3 1 100.0% 100.0% 100.0% 7.20 ± 0.02 7.22 ± 0.03 0.02 0.99 – – 1.75
778966176 2025:269 2 1 99.6% 99.6% 100.0% 7.75 ± 0.02 7.75 ± 0.03 0.01 0.27 – – 1.04
778966456 2025:269 2 1 99.0% 98.8% 100.0% 8.90 ± 0.02 8.90 ± 0.03 0.00 0.15 – – 0.38
778978944 2025:269 2 1 100.0% 100.0% 100.0% 7.27 ± 0.02 7.25 ± 0.03 -0.02 -0.88 – – 0.12
778978960 2025:269 3 1 99.9% 99.9% 100.0% 6.75 ± 0.02 6.75 ± 0.03 -0.01 -0.32 – – 0.93
1011358264 2025:269 2 1 97.5% 96.8% 100.0% 9.47 ± 0.02 9.39 ± 0.04 -0.07 -3.69 – – 0.04
1186611072 2025:270 3 1 98.2% 98.1% 99.9% 8.64 ± 0.02 8.66 ± 0.03 0.02 0.98 – – 1.49

  • sample: One sample of ACA image telemetry. This could be a real image readout or it could be a null 4x4 image when the ACA is not tracking. Be aware that the sample period is faster for null 4x4 images (1.025 sec) than for typical 6x6 or 8x8 tracked images (2.05 or 4.1 sec respectively).
  • Kalman samples: Subset of samples when ACA could be tracking stars (AOPCADMD == NPNT & AOACASEQ == KALM)
  • dr3: Subset of tracked Kalman samples with radial centroid residual < 3 arcsec. This corresponds to "high quality" readouts. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • dbox5: Subset of tracked Kalman samples with centroid residual within a 5 arcsec box. This corresponds to spatial filter used by the OBC for inclusion in Kalman filter. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • track: Subset of Kalman samples where the image is being tracked (AOACFCT == TRAK)
  • sat_pix: Subset of Kalman samples with saturated pixel flag OK (AOACISP == OK)
  • ion_rad: Subset of Kalman samples with ionizing radiation flag OK (AOACIIR == OK)
  • mag_est_ok: Subset of Kalman samples that have a magnitude estimate (track & ion_rad)
  • n_total: Total number of sample regardless of OBC PCAD status
  • n: Synonym for n_total
  • n_kalman: Number of Kalman samples
  • n_dr3: Number of dr3 samples.
  • n_dbox5: Number of dbox5 samples.
  • n_track: Number of track samples.
  • n_ok_3: Number of (track & sat_pix & ion_rad & dr3) samples
  • n_ok_5: Number of (track & sat_pix & ion_rad & dbox5) samples
  • n_mag_est_ok: Number of (track & ion_rad) samples
  • n_mag_est_ok_3: Number of (track & ion_rad & dr3) samples
  • n_mag_est_ok_5: Number of (track & ion_rad & dbox5) samples
  • f_dr3: Fraction of mag-est-ok samples with centroid residual < 3 arcsec((mag_est_ok & n_dr3)/n_mag_est_ok)
  • f_dbox5: Fraction of mag-est-ok samples with centroid within 5 arcsec box((mag_est_ok & n_dbox5)/n_mag_est_ok)
  • f_mag_est_ok: n_mag_est_ok_3/n_kalman. This is a measure of the fraction of time during an observation that a magnitude estimate is available.
  • f_mag_est_ok_3: n_mag_est_ok_3/n_kalman.
  • f_mag_est_ok_5: n_mag_est_ok_5/n_kalman.
  • f_ok: n_ok_5 / n_kalman. Same as f_ok_5
  • f_ok_3: n_ok_3 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting high-quality star centroids.
  • f_ok_5: n_ok_5 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting any star centroid at all. This includes measurements out to 5 arcsec box halfwidth, so potentially 7 arcsec radial offset.