Observation information
- date-obs: 2026-06-23
- time-obs: 16:30:37.211600000
- date-end: 2026-06-23
- time-end: 18:41:58.189200000
- obs_id: A14_042T02_9000006586
- exposure: 5349.95502269
- 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_58094cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58094cztM0_level2_quad_clean.evt
|
| Size (bytes) | 712,445,760 | 96,719,040 |
| Size | 679.4 MB
| 92.2 MB
|
| Events in quadrant A | 3,406,296 | 702,811 |
| Events in quadrant B | 9,720,835 | 562,341 |
| Events in quadrant C | 3,810,790 | 661,198 |
| Events in quadrant D | 8,881,215 | 504,673 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15412 | 2 |
| B | 0 | 33940 | 2 |
| C | 0 | 16504 | 2 |
| D | 0 | 31347 | 10 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7148 | 67 | 0.937325% |
| B | 7148 | 2019 | 28.245663% |
| C | 7148 | 103 | 1.440963% |
| D | 7147 | 1560 | 21.827340% |
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 | 7778 | 7149 | 30 | 30 | 0.39% | 0.42% |  |
| B | 7777 | 7148 | 1614 | 1614 | 20.75% | 22.58% |  |
| C | 7778 | 7149 | 84 | 84 | 1.08% | 1.17% |  |
| D | 7777 | 7148 | 1600 | 1600 | 20.57% | 22.38% |  |
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 | 10 | 251 | 142597 | 716.48 | 799 | 779 | 197.9 |
| A | 7 | 112 | 47653 | 236.81 | 799 | 779 | 197.9 |
| A | 13 | 248 | 35589 | 175.86 | 799 | 779 | 197.9 |
| B | 10 | 128 | 5897437 | 38262.81 | 711 | 685 | 154.1 |
| B | 5 | 172 | 641488 | 4158.04 | 711 | 685 | 154.1 |
| B | 0 | 153 | 53143 | 340.39 | 711 | 685 | 154.1 |
| C | 12 | 252 | 262289 | 1256.5 | 767 | 759 | 208.1 |
| C | 12 | 254 | 206364 | 987.81 | 767 | 759 | 208.1 |
| C | 14 | 254 | 113398 | 541.16 | 767 | 759 | 208.1 |
| D | 12 | 110 | 5044482 | 25211.41 | 710 | 679 | 200.1 |
| D | 8 | 160 | 612837 | 3059.87 | 710 | 679 | 200.1 |
| D | 8 | 240 | 138757 | 690.18 | 710 | 679 | 200.1 |
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 |  |