Observation information
- date-obs: 2026-02-26
- time-obs: 01:38:17.412900000
- date-end: 2026-02-26
- time-end: 03:46:06.395800000
- obs_id: A14_049T01_9000006552
- exposure: 4714.98080438
- sourceid: NGC 1487
- observer: amrutha
- ra_pnt: 58.94208
- dec_pnt: -42.36806
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T01_9000006552_56346cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56346cztM0_level2_quad_clean.evt
|
| Size (bytes) | 690,805,440 | 90,408,960 |
| Size | 658.8 MB
| 86.2 MB
|
| Events in quadrant A | 4,669,088 | 624,395 |
| Events in quadrant B | 5,224,233 | 673,108 |
| Events in quadrant C | 8,447,600 | 448,380 |
| Events in quadrant D | 6,723,497 | 534,327 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18256 | 2 |
| B | 0 | 20106 | 2 |
| C | 0 | 29620 | 2 |
| D | 0 | 24530 | 6 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6550 | 340 | 5.190840% |
| B | 6550 | 418 | 6.381679% |
| C | 6550 | 2066 | 31.541985% |
| D | 6549 | 664 | 10.138953% |
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 | 7670 | 6551 | 228 | 228 | 2.97% | 3.48% |  |
| B | 7670 | 6551 | 211 | 211 | 2.75% | 3.22% |  |
| C | 7669 | 6549 | 1601 | 1601 | 20.88% | 24.45% |  |
| D | 7669 | 6549 | 626 | 626 | 8.16% | 9.56% |  |
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 | 3 | 78 | 771367 | 4382.58 | 712 | 697 | 175.8 |
| A | 3 | 14 | 247646 | 1404.33 | 712 | 697 | 175.8 |
| A | 8 | 25 | 205005 | 1161.84 | 712 | 697 | 175.8 |
| B | 5 | 172 | 1472716 | 9859.72 | 711 | 687 | 149.3 |
| B | 5 | 185 | 212864 | 1421.17 | 711 | 687 | 149.3 |
| B | 4 | 171 | 163881 | 1093.08 | 711 | 687 | 149.3 |
| C | 12 | 254 | 3083854 | 19010.75 | 600 | 596 | 162.2 |
| C | 15 | 230 | 2401465 | 14803.28 | 600 | 596 | 162.2 |
| C | 13 | 3 | 249904 | 1537.18 | 600 | 596 | 162.2 |
| D | 2 | 62 | 1054396 | 5436.25 | 680 | 648 | 193.8 |
| D | 6 | 239 | 1017613 | 5246.49 | 680 | 648 | 193.8 |
| D | 8 | 129 | 794878 | 4097.41 | 680 | 648 | 193.8 |
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 |  |