Observation information
- date-obs: 2026-04-18
- time-obs: 01:31:56.597600000
- date-end: 2026-04-18
- time-end: 04:00:26.574400000
- obs_id: A14_083T10_9000006566
- exposure: 5458.50941342
- sourceid: NGC1249
- observer: Rakshit
- ra_pnt: 47.50507
- dec_pnt: -53.33584
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T10_9000006566_57104cztM0_level2.fits
| modeM0/AS1A14_083T10_9000006566_57104cztM0_level2_quad_clean.evt
|
| Size (bytes) | 519,641,280 | 96,710,400 |
| Size | 495.6 MB
| 92.2 MB
|
| Events in quadrant A | 3,189,531 | 655,498 |
| Events in quadrant B | 3,382,296 | 695,867 |
| Events in quadrant C | 3,459,692 | 629,485 |
| Events in quadrant D | 8,690,656 | 486,477 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14147 | 2 |
| B | 0 | 14592 | 2 |
| C | 0 | 14828 | 2 |
| D | 0 | 30505 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6611 | 111 | 1.679020% |
| B | 6611 | 238 | 3.600061% |
| C | 6611 | 105 | 1.588262% |
| D | 6611 | 1308 | 19.785206% |
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 | 8911 | 6613 | 18 | 18 | 0.20% | 0.27% |  |
| B | 8911 | 6613 | 76 | 76 | 0.85% | 1.15% |  |
| C | 8911 | 6613 | 39 | 39 | 0.44% | 0.59% |  |
| D | 8911 | 6613 | 1232 | 1232 | 13.83% | 18.63% |  |
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 | 70647 | 381.71 | 742 | 722 | 183.2 |
| A | 13 | 248 | 60907 | 328.54 | 742 | 722 | 183.2 |
| A | 4 | 3 | 48379 | 260.15 | 742 | 722 | 183.2 |
| B | 10 | 16 | 275559 | 1796.79 | 723 | 696 | 153.0 |
| B | 0 | 63 | 78236 | 506.88 | 723 | 696 | 153.0 |
| B | 8 | 128 | 48029 | 309.41 | 723 | 696 | 153.0 |
| C | 12 | 254 | 216087 | 1093.06 | 726 | 721 | 197.0 |
| C | 13 | 3 | 206695 | 1045.39 | 726 | 721 | 197.0 |
| C | 14 | 254 | 71916 | 361.34 | 726 | 721 | 197.0 |
| D | 15 | 142 | 4500934 | 24156.74 | 664 | 635 | 186.3 |
| D | 12 | 33 | 1090028 | 5847.65 | 664 | 635 | 186.3 |
| D | 2 | 31 | 314573 | 1685.16 | 664 | 635 | 186.3 |
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 |  |