Observation information
- date-obs: 2026-06-29
- time-obs: 06:00:35.860800000
- date-end: 2026-06-29
- time-end: 08:10:58.837800000
- obs_id: A14_042T02_9000006586
- exposure: 5107.80580789
- 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_58177cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58177cztM0_level2_quad_clean.evt
|
| Size (bytes) | 561,041,280 | 96,275,520 |
| Size | 535.1 MB
| 91.8 MB
|
| Events in quadrant A | 3,030,150 | 665,031 |
| Events in quadrant B | 8,399,148 | 582,669 |
| Events in quadrant C | 3,063,061 | 635,076 |
| Events in quadrant D | 5,774,666 | 581,789 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13386 | 2 |
| B | 0 | 29480 | 2 |
| C | 0 | 13600 | 2 |
| D | 0 | 21607 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6458 | 79 | 1.223289% |
| B | 6458 | 1674 | 25.921338% |
| C | 6458 | 78 | 1.207804% |
| D | 6458 | 264 | 4.087953% |
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 | 7583 | 6459 | 5 | 5 | 0.07% | 0.08% |  |
| B | 7583 | 6459 | 1195 | 1195 | 15.76% | 18.50% |  |
| C | 7583 | 6459 | 8 | 8 | 0.11% | 0.12% |  |
| D | 7583 | 6459 | 257 | 257 | 3.39% | 3.98% |  |
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 | 26716 | 139.51 | 760 | 741 | 186.2 |
| A | 3 | 245 | 23182 | 120.53 | 760 | 741 | 186.2 |
| A | 4 | 3 | 14527 | 74.05 | 760 | 741 | 186.2 |
| B | 10 | 128 | 5480857 | 37408.96 | 689 | 664 | 146.5 |
| B | 10 | 247 | 74051 | 500.96 | 689 | 664 | 146.5 |
| B | 0 | 79 | 27326 | 182.0 | 689 | 664 | 146.5 |
| C | 6 | 223 | 87146 | 429.76 | 736 | 727 | 201.1 |
| C | 14 | 245 | 36620 | 178.5 | 736 | 727 | 201.1 |
| C | 12 | 254 | 35422 | 172.54 | 736 | 727 | 201.1 |
| D | 12 | 110 | 1738099 | 8610.62 | 726 | 695 | 201.8 |
| D | 0 | 160 | 409389 | 2025.5 | 726 | 695 | 201.8 |
| D | 8 | 160 | 218712 | 1080.5 | 726 | 695 | 201.8 |
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 |  |