Observation information
- date-obs: 2026-06-28
- time-obs: 07:20:36.886700000
- date-end: 2026-06-28
- time-end: 09:38:24.064900000
- obs_id: A14_042T02_9000006586
- exposure: 753.481933117
- 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_58163cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58163cztM0_level2_quad_clean.evt
|
| Size (bytes) | 718,594,560 | 80,729,280 |
| Size | 685.3 MB
| 77.0 MB
|
| Events in quadrant A | 3,061,286 | 674,478 |
| Events in quadrant B | 15,712,035 | 91,029 |
| Events in quadrant C | 3,360,740 | 639,893 |
| Events in quadrant D | 3,966,573 | 591,359 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13321 | 2 |
| B | 0 | 51131 | 2 |
| C | 0 | 14465 | 2 |
| D | 0 | 16033 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6419 | 83 | 1.293036% |
| B | 6419 | 5824 | 90.730643% |
| C | 6419 | 77 | 1.199564% |
| D | 6419 | 220 | 3.427325% |
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 | 7589 | 6419 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7589 | 6419 | 5533 | 5533 | 72.91% | 86.20% |  |
| C | 7589 | 6419 | 23 | 23 | 0.30% | 0.36% |  |
| D | 7589 | 6419 | 137 | 137 | 1.81% | 2.13% |  |
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 | 53442 | 282.2 | 762 | 744 | 186.7 |
| A | 4 | 3 | 18450 | 94.82 | 762 | 744 | 186.7 |
| A | 6 | 226 | 16651 | 85.18 | 762 | 744 | 186.7 |
| B | 10 | 128 | 14444140 | 250846.63 | 266 | 257 | 57.6 |
| B | 4 | 201 | 79719 | 1380.02 | 266 | 257 | 57.6 |
| B | 0 | 79 | 47885 | 827.15 | 266 | 257 | 57.6 |
| C | 12 | 252 | 137679 | 685.39 | 733 | 726 | 199.8 |
| C | 14 | 96 | 134300 | 668.48 | 733 | 726 | 199.8 |
| C | 3 | 113 | 107626 | 534.99 | 733 | 726 | 199.8 |
| D | 6 | 239 | 239545 | 1173.73 | 727 | 697 | 203.5 |
| D | 8 | 240 | 196252 | 960.98 | 727 | 697 | 203.5 |
| D | 12 | 110 | 177861 | 870.6 | 727 | 697 | 203.5 |
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 |  |