Observation information
- date-obs: 2026-06-24
- time-obs: 18:28:56.952300000
- date-end: 2026-06-24
- time-end: 20:43:07.928500000
- obs_id: A14_042T02_9000006586
- exposure: 6383.3813737
- 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_58110cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58110cztM0_level2_quad_clean.evt
|
| Size (bytes) | 741,896,640 | 109,296,000 |
| Size | 707.5 MB
| 104.2 MB
|
| Events in quadrant A | 3,660,330 | 772,820 |
| Events in quadrant B | 8,236,746 | 704,388 |
| Events in quadrant C | 3,611,304 | 730,607 |
| Events in quadrant D | 11,336,845 | 546,789 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 1 | 140232410544168 | 140230682214446 |
| B | 1 | -1 | -1 |
| C | 1 | -1 | -1 |
| D | 1 | -1 | -1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16670 | 1 |
| B | 0 | 30054 | 1 |
| C | 0 | 16620 | 1 |
| D | 0 | 39281 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7976 | 25 | 0.313440% |
| B | 7976 | 1288 | 16.148445% |
| C | 7976 | 14 | 0.175527% |
| D | 7975 | 1932 | 24.225705% |
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 | 7976 | 7976 | 7 | 7 | 0.09% | 0.09% |  |
| B | 7976 | 7976 | 895 | 895 | 11.22% | 11.22% |  |
| C | 7976 | 7976 | 3 | 3 | 0.04% | 0.04% |  |
| D | 7975 | 7975 | 1860 | 1860 | 23.32% | 23.32% |  |
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 | 11 | 3 | 74788 | 339.98 | 880 | 858 | 217.5 |
| A | 7 | 64 | 59540 | 269.86 | 880 | 858 | 217.5 |
| A | 10 | 251 | 45747 | 206.43 | 880 | 858 | 217.5 |
| B | 5 | 172 | 2792267 | 16008.67 | 812 | 783 | 174.4 |
| B | 10 | 128 | 1554284 | 8909.06 | 812 | 783 | 174.4 |
| B | 5 | 185 | 374322 | 2142.18 | 812 | 783 | 174.4 |
| C | 12 | 252 | 100027 | 423.31 | 849 | 839 | 234.3 |
| C | 11 | 244 | 43136 | 180.51 | 849 | 839 | 234.3 |
| C | 15 | 208 | 40550 | 169.48 | 849 | 839 | 234.3 |
| D | 12 | 110 | 6246186 | 27878.42 | 788 | 754 | 224.0 |
| D | 0 | 160 | 1636309 | 7300.81 | 788 | 754 | 224.0 |
| D | 2 | 249 | 173416 | 770.73 | 788 | 754 | 224.0 |
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 |  |