Observation information
- date-obs: 2026-06-23
- time-obs: 13:09:54.243800000
- date-end: 2026-06-23
- time-end: 15:15:25.218500000
- obs_id: A14_042T02_9000006586
- exposure: 5466.81488276
- 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_58092cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58092cztM0_level2_quad_clean.evt
|
| Size (bytes) | 580,965,120 | 95,140,800 |
| Size | 554.1 MB
| 90.7 MB
|
| Events in quadrant A | 2,985,303 | 659,309 |
| Events in quadrant B | 8,220,633 | 606,612 |
| Events in quadrant C | 3,616,768 | 617,866 |
| Events in quadrant D | 6,184,218 | 548,431 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 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 | 13360 | 1 |
| B | 0 | 28996 | 1 |
| C | 0 | 15286 | 2 |
| D | 0 | 22935 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6431 | 119 | 1.850412% |
| B | 6432 | 1193 | 18.547886% |
| C | 6431 | 191 | 2.969989% |
| D | 6431 | 657 | 10.216141% |
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 | 7531 | 6431 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7532 | 6432 | 628 | 628 | 8.34% | 9.76% |  |
| C | 7531 | 6431 | 100 | 100 | 1.33% | 1.55% |  |
| D | 7531 | 6431 | 482 | 482 | 6.40% | 7.49% |  |
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 | 3 | 245 | 20555 | 106.52 | 749 | 730 | 186.1 |
| A | 2 | 143 | 16572 | 85.12 | 749 | 730 | 186.1 |
| A | 4 | 3 | 16542 | 84.96 | 749 | 730 | 186.1 |
| B | 10 | 128 | 4817108 | 31888.85 | 696 | 668 | 151.0 |
| B | 5 | 172 | 276560 | 1826.64 | 696 | 668 | 151.0 |
| B | 4 | 171 | 77843 | 510.96 | 696 | 668 | 151.0 |
| C | 12 | 252 | 333290 | 1698.22 | 712 | 704 | 195.8 |
| C | 6 | 223 | 315418 | 1606.96 | 712 | 704 | 195.8 |
| C | 12 | 254 | 88369 | 447.63 | 712 | 704 | 195.8 |
| D | 12 | 110 | 1078233 | 5472.74 | 697 | 666 | 196.9 |
| D | 3 | 224 | 1007794 | 5114.99 | 697 | 666 | 196.9 |
| D | 12 | 1 | 443678 | 2249.96 | 697 | 666 | 196.9 |
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 |  |