Observation information
- date-obs: 2026-06-28
- time-obs: 17:50:45.986400000
- date-end: 2026-06-28
- time-end: 20:06:06.964500000
- obs_id: A14_042T02_9000006586
- exposure: 786.612268686
- 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_58169cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58169cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,233,129,600 | 80,928,000 |
| Size | 1.1 GB
| 77.2 MB
|
| Events in quadrant A | 3,701,851 | 785,597 |
| Events in quadrant B | 19,670,928 | 78,607 |
| Events in quadrant C | 3,749,794 | 744,517 |
| Events in quadrant D | 17,896,494 | 276,872 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16965 | 0 |
| B | 0 | 64073 | 2 |
| C | 0 | 17306 | 0 |
| D | 0 | 58632 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8121 | 13 | 0.160079% |
| B | 8120 | 7454 | 91.798030% |
| C | 8120 | 13 | 0.160099% |
| D | 8121 | 5516 | 67.922670% |
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 | 8121 | 8121 | 2 | 2 | 0.02% | 0.02% |  |
| B | 8120 | 8120 | 7135 | 7135 | 87.87% | 87.87% |  |
| C | 8120 | 8120 | 11 | 11 | 0.14% | 0.14% |  |
| D | 8121 | 8121 | 6116 | 6116 | 75.31% | 75.31% |  |
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 | 2 | 143 | 48340 | 212.41 | 904 | 879 | 223.4 |
| A | 4 | 3 | 45323 | 198.91 | 904 | 879 | 223.4 |
| A | 11 | 3 | 36168 | 157.94 | 904 | 879 | 223.4 |
| B | 10 | 128 | 17495800 | 254323.43 | 317 | 305 | 68.8 |
| B | 2 | 249 | 757928 | 11013.19 | 317 | 305 | 68.8 |
| B | 5 | 185 | 68254 | 987.74 | 317 | 305 | 68.8 |
| C | 15 | 208 | 55389 | 230.34 | 869 | 862 | 236.7 |
| C | 8 | 208 | 52824 | 219.51 | 869 | 862 | 236.7 |
| C | 12 | 252 | 51772 | 215.06 | 869 | 862 | 236.7 |
| D | 12 | 110 | 13777106 | 69583.32 | 699 | 669 | 198.0 |
| D | 8 | 240 | 409506 | 2064.99 | 699 | 669 | 198.0 |
| D | 8 | 160 | 345562 | 1742.02 | 699 | 669 | 198.0 |
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 |  |