ACA Magnitude Statistics

2025:103:23:41:44.515 Update Report

Time range 2025:013:23:41:44.352 – 2025:103:23:41:44.352
Stars 40
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
74057008 2025:103 2 1 1 98.9% 98.7% 100.0% 8.53 ± 0.02 8.58 ± 0.03 0.05 2.36 – – 1.53
74059856 2025:103 2 1 1 99.4% 99.3% 100.0% 8.50 ± 0.02 8.50 ± 0.03 0.00 0.03 – – 0.79
74060688 2025:103 2 1 1 99.1% 99.1% 100.0% 8.17 ± 0.02 8.20 ± 0.03 0.03 1.70 – – 0.69
74062976 2025:103 2 1 1 99.7% 99.6% 100.0% 8.42 ± 0.02 8.44 ± 0.03 0.02 1.16 – – 0.68
74064352 2025:103 2 1 1 99.4% 99.2% 100.0% 8.71 ± 0.02 8.72 ± 0.03 0.01 0.56 – – 1.31
74068672 2025:103 2 1 1 99.8% 99.7% 100.0% 8.10 ± 0.02 8.10 ± 0.03 0.00 0.12 – – 0.38
727979056 2025:103 3 1 1 99.9% 99.9% 100.0% 8.73 ± 0.02 8.76 ± 0.04 0.03 1.25 – – 1.68
727983544 2025:103 3 1 1 100.0% 100.0% 100.0% 6.93 ± 0.02 6.96 ± 0.03 0.03 1.34 – – 0.03
727984712 2025:103 4 1 1 100.0% 100.0% 100.0% 7.04 ± 0.02 7.06 ± 0.04 0.02 1.08 – – 0.05
914626744 2025:103 4 2 2 99.3% 99.3% 100.0% 8.47 ± 0.02 8.49 ± 0.03 0.02 0.95 – – 1.16
983832464 2025:103 3 2 2 100.0% 99.9% 100.0% 8.56 ± 0.02 8.57 ± 0.03 0.01 0.52 – – 0.58
983832600 2025:103 4 2 2 99.5% 99.4% 100.0% 9.02 ± 0.02 9.08 ± 0.03 0.05 2.59 – – 0.66
983833592 2025:103 4 2 2 99.8% 99.8% 100.0% 8.33 ± 0.10 8.18 ± 0.05 -0.15 -1.50 – – 4.68
983834432 2025:103 5 2 2 99.0% 98.9% 100.0% 8.75 ± 0.02 8.77 ± 0.04 0.02 0.90 – – 1.72
983835632 2025:103 4 2 2 98.3% 98.3% 100.0% 8.31 ± 0.02 8.35 ± 0.03 0.04 2.03 – – 1.46
1021716808 2025:103 64 1 1 99.0% 98.9% 99.9% 8.82 ± 0.02 8.84 ± 0.04 0.02 1.03 – – 0.23
1021717656 2025:103 67 1 1 99.6% 99.6% 100.0% 8.29 ± 0.02 8.32 ± 0.03 0.03 1.60 – – 1.80
1021718264 2025:103 26 1 1 99.0% 99.0% 100.0% 8.30 ± 0.02 8.32 ± 0.04 0.01 0.65 – – 1.23
1021719704 2025:103 67 1 1 100.0% 99.9% 100.0% 7.53 ± 0.02 7.53 ± 0.03 0.01 0.42 – – 0.14
1139691688 2025:103 2 1 1 99.8% 99.8% 100.0% 8.51 ± 0.02 8.53 ± 0.03 0.02 0.94 – – 2.20
1139695800 2025:103 2 1 1 99.9% 99.9% 100.0% 8.97 ± 0.02 8.99 ± 0.03 0.02 1.07 – – 2.25
727978824 2025:103 2 1 1 99.9% 99.9% 100.0% 8.15 ± 0.02 8.19 ± 0.03 0.03 1.67 – – 0.76
727987344 2025:103 2 1 1 100.0% 100.0% 100.0% 5.66 ± 0.02 5.67 ± 0.03 0.01 0.50 – – 0.49
1022231896 2025:103 2 1 1 100.0% 100.0% 100.0% 8.11 ± 0.13 8.20 ± 0.03 0.09 0.70 – – 3.66
74066880 2025:103 1 1 1 0.0% 0.0% 0.0% 8.78 ± 0.02 0.00 ± nan -8.78 -438.80 – – 1.52
74069512 2025:103 1 1 1 0.0% 0.0% 0.0% 8.66 ± 0.02 0.00 ± nan -8.66 -432.90 – – 1.11
728116488 2025:103 1 1 1 0.0% 0.0% 0.0% 6.68 ± 0.06 0.00 ± nan -6.68 -111.30 – – 3.00
983827440 2025:103 2 2 2 0.0% 0.0% 0.0% 9.15 ± 0.02 0.00 ± nan -9.15 -457.30 – – 1.35
983832664 2025:103 2 2 2 0.0% 0.0% 0.0% 9.09 ± 0.02 0.00 ± nan -9.09 -454.65 – – 1.34
1050411040 2025:103 1 1 1 0.0% 0.0% 0.0% 8.58 ± 0.02 0.00 ± nan -8.58 -428.91 – – 0.92
1050411464 2025:103 1 1 1 0.0% 0.0% 0.0% 9.34 ± 0.02 0.00 ± nan -9.34 -467.07 – – 0.62
1050411648 2025:103 1 1 1 0.0% 0.0% 0.0% 7.23 ± 0.02 0.00 ± nan -7.23 -361.32 – – 1.56
1050414040 2025:103 1 1 1 0.0% 0.0% 0.0% 9.66 ± 0.02 0.00 ± nan -9.66 -482.87 – – 1.53
1050416440 2025:103 1 1 1 0.0% 0.0% 0.0% 9.70 ± 0.02 0.00 ± nan -9.70 -485.25 – – 1.15
1088684976 2025:103 1 1 1 0.0% 0.0% 0.0% 7.96 ± 0.02 0.00 ± nan -7.96 -398.25 – – 1.25
1088686480 2025:103 1 1 1 0.0% 0.0% 0.0% 8.54 ± 0.02 0.00 ± nan -8.54 -426.90 – – 0.04
1088818160 2025:103 1 1 1 0.0% 0.0% 0.0% 8.67 ± 0.02 0.00 ± nan -8.67 -433.37 – – 0.00
1088820320 2025:103 1 1 1 0.0% 0.0% 0.0% 9.08 ± 0.02 0.00 ± nan -9.08 -454.18 – – 0.17
1088822368 2025:103 1 1 1 0.0% 0.0% 0.0% 6.44 ± 0.02 0.00 ± nan -6.44 -322.08 – – 1.30
1139696592 2025:103 1 1 1 0.0% 0.0% 0.0% 6.63 ± 0.02 0.00 ± nan -6.63 -331.64 – – 2.48

  • 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.