Observation information
- date-obs: 2026-05-08
- time-obs: 21:09:24.407000000
- date-end: 2026-05-08
- time-end: 23:27:48.374500000
- obs_id: A14_102T01_9000006572
- exposure: 7091.98102248
- sourceid: LMC X-4
- observer: rsharmaphys
- ra_pnt: 83.20648
- dec_pnt: -66.37033
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_102T01_9000006572_57413cztM0_level2.fits
| modeM0/AS1A14_102T01_9000006572_57413cztM0_level2_quad_clean.evt
|
| Size (bytes) | 550,488,960 | 100,353,600 |
| Size | 525.0 MB
| 95.7 MB
|
| Events in quadrant A | 3,430,947 | 679,138 |
| Events in quadrant B | 3,821,529 | 676,260 |
| Events in quadrant C | 7,969,904 | 551,374 |
| Events in quadrant D | 4,539,669 | 581,218 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16639 | 325 |
| B | 0 | 17602 | 300 |
| C | 0 | 29692 | 461 |
| D | 0 | 19481 | 324 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 4 |
| B | 0 | 160 | 4 |
| C | 0 | 160 | 2 |
| D | 0 | 160 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7917 | 13 | 0.164204% |
| B | 7928 | 76 | 0.958628% |
| C | 7905 | 1270 | 16.065781% |
| D | 7927 | 135 | 1.703040% |
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 | 8272 | 8238 | 2 | 2 | 0.02% | 0.02% |  |
| B | 8276 | 8237 | 28 | 28 | 0.34% | 0.34% |  |
| C | 8294 | 8219 | 1034 | 1034 | 12.47% | 12.58% |  |
| D | 8294 | 8239 | 115 | 115 | 1.39% | 1.40% |  |
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 | 0 | 12 | 35731 | 166.66 | 855 | 833 | 209.4 |
| A | 3 | 14 | 25531 | 117.95 | 855 | 833 | 209.4 |
| A | 3 | 245 | 13936 | 62.58 | 855 | 833 | 209.4 |
| B | 4 | 216 | 112483 | 615.06 | 847 | 814 | 181.6 |
| B | 10 | 246 | 89954 | 490.97 | 847 | 814 | 181.6 |
| B | 7 | 252 | 84708 | 462.08 | 847 | 814 | 181.6 |
| C | 15 | 224 | 4343535 | 21081.43 | 758 | 751 | 206.0 |
| C | 14 | 254 | 183267 | 886.0 | 758 | 751 | 206.0 |
| C | 6 | 223 | 143627 | 693.57 | 758 | 751 | 206.0 |
| D | 8 | 240 | 623315 | 2686.77 | 818 | 780 | 231.7 |
| D | 3 | 12 | 178787 | 768.25 | 818 | 780 | 231.7 |
| D | 7 | 96 | 109653 | 469.88 | 818 | 780 | 231.7 |
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 |  |