Observation information
- date-obs: 2026-06-30
- time-obs: 15:14:54.520000000
- date-end: 2026-07-01
- time-end: 00:08:04.430800000
- obs_id: A14_042T02_9000006586
- exposure: 21959.8231421
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58201cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58201cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,725,027,840 | 338,086,080 |
| Size | 1.6 GB
| 322.4 MB
|
| Events in quadrant A | 13,494,010 | 2,175,014 |
| Events in quadrant B | 21,057,850 | 2,269,117 |
| Events in quadrant C | 10,476,953 | 2,170,551 |
| Events in quadrant D | 16,972,710 | 1,972,309 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 484 | 0 |
| B | 0 | 484 | 0 |
| C | 0 | 484 | 0 |
| D | 0 | 484 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 58109 | 3 |
| B | 0 | 78853 | 3 |
| C | 0 | 49375 | 3 |
| D | 0 | 67570 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 23972 | 1374 | 5.731687% |
| B | 23974 | 2151 | 8.972220% |
| C | 23974 | 50 | 0.208559% |
| D | 23973 | 1327 | 5.535394% |
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 | 31990 | 23976 | 1215 | 1215 | 3.80% | 5.07% |  |
| B | 31991 | 23978 | 1481 | 1481 | 4.63% | 6.18% |  |
| C | 31991 | 23978 | 19 | 19 | 0.06% | 0.08% |  |
| D | 31990 | 23977 | 1193 | 1193 | 3.73% | 4.98% |  |
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 | 7 | 64 | 3573110 | 5691.92 | 2530 | 2465 | 627.3 |
| A | 4 | 3 | 74820 | 115.34 | 2530 | 2465 | 627.3 |
| A | 3 | 245 | 65394 | 100.31 | 2530 | 2465 | 627.3 |
| B | 10 | 128 | 7697541 | 14577.67 | 2477 | 2379 | 527.9 |
| B | 2 | 249 | 1969582 | 3726.66 | 2477 | 2379 | 527.9 |
| B | 10 | 247 | 339508 | 638.65 | 2477 | 2379 | 527.9 |
| C | 12 | 252 | 354967 | 514.43 | 2512 | 2494 | 685.2 |
| C | 6 | 223 | 88167 | 125.04 | 2512 | 2494 | 685.2 |
| C | 12 | 250 | 76119 | 107.46 | 2512 | 2494 | 685.2 |
| D | 12 | 110 | 2682089 | 3846.3 | 2450 | 2343 | 696.7 |
| D | 8 | 160 | 1413427 | 2025.36 | 2450 | 2343 | 696.7 |
| D | 7 | 222 | 1025054 | 1467.92 | 2450 | 2343 | 696.7 |
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 |  |