Observation information
- date-obs: 2025-12-14
- time-obs: 05:02:40.873300000
- date-end: 2025-12-14
- time-end: 07:19:42.868900000
- obs_id: A14_009T01_9000006534
- exposure: 7314.41072673
- sourceid: M31N 2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_009T01_9000006534_55248cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55248cztM0_level2_quad_clean.evt
|
| Size (bytes) | 603,771,840 | 113,875,200 |
| Size | 575.8 MB
| 108.6 MB
|
| Events in quadrant A | 3,822,516 | 745,783 |
| Events in quadrant B | 3,854,947 | 803,136 |
| Events in quadrant C | 8,265,479 | 653,928 |
| Events in quadrant D | 5,768,768 | 673,345 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 166 | 0 |
| B | 0 | 166 | 0 |
| C | 0 | 166 | 0 |
| D | 0 | 166 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17691 | 0 |
| B | 0 | 17905 | 0 |
| C | 0 | 30211 | 1 |
| D | 0 | 22595 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8222 | 61 | 0.741912% |
| B | 8223 | 145 | 1.763347% |
| C | 8222 | 1045 | 12.709803% |
| D | 8222 | 241 | 2.931160% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 8222 | 8222 | 53 | 53 | 0.64% | 0.64% |  |
| B | 8223 | 8223 | 56 | 56 | 0.68% | 0.68% |  |
| C | 8222 | 8222 | 871 | 871 | 10.59% | 10.59% |  |
| D | 8222 | 8222 | 221 | 221 | 2.69% | 2.69% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 0 | 8 | 208447 | 990.4 | 861 | 840 | 209.6 |
| A | 3 | 62 | 87818 | 414.93 | 861 | 840 | 209.6 |
| A | 8 | 6 | 50587 | 237.32 | 861 | 840 | 209.6 |
| B | 2 | 249 | 335926 | 1813.0 | 857 | 824 | 184.8 |
| B | 5 | 185 | 63165 | 337.28 | 857 | 824 | 184.8 |
| B | 10 | 247 | 28425 | 149.33 | 857 | 824 | 184.8 |
| C | 12 | 254 | 3067077 | 14098.18 | 799 | 793 | 217.5 |
| C | 1 | 16 | 540870 | 2483.17 | 799 | 793 | 217.5 |
| C | 9 | 38 | 470611 | 2160.13 | 799 | 793 | 217.5 |
| D | 5 | 38 | 1027818 | 4421.44 | 829 | 797 | 232.3 |
| D | 2 | 31 | 452864 | 1946.2 | 829 | 797 | 232.3 |
| D | 2 | 249 | 405984 | 1744.38 | 829 | 797 | 232.3 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |