Observation information
- date-obs: 2026-03-03
- time-obs: 04:45:00.404600000
- date-end: 2026-03-03
- time-end: 06:51:57.386100000
- obs_id: A14_083T05_9000006554
- exposure: 3913.06881613
- sourceid: NGC1556
- observer: Rakshit
- ra_pnt: 64.43679
- dec_pnt: -50.16444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T05_9000006554_56422cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56422cztM0_level2_quad_clean.evt
|
| Size (bytes) | 925,326,720 | 72,889,920 |
| Size | 882.5 MB
| 69.5 MB
|
| Events in quadrant A | 11,476,611 | 336,309 |
| Events in quadrant B | 6,233,796 | 532,233 |
| Events in quadrant C | 5,255,358 | 511,696 |
| Events in quadrant D | 10,757,042 | 348,559 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 38738 | 1 |
| B | 0 | 23279 | 1 |
| C | 0 | 20362 | 1 |
| D | 0 | 36678 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6852 | 3087 | 45.052539% |
| B | 6852 | 1294 | 18.884997% |
| C | 6853 | 600 | 8.755290% |
| D | 6852 | 2666 | 38.908348% |
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 | 7898 | 6943 | 2682 | 2682 | 33.96% | 38.63% |  |
| B | 7899 | 7134 | 687 | 687 | 8.70% | 9.63% |  |
| C | 7900 | 7129 | 442 | 442 | 5.59% | 6.20% |  |
| D | 7899 | 7134 | 2546 | 2546 | 32.23% | 35.69% |  |
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 | 12 | 3 | 5097918 | 34429.38 | 596 | 580 | 148.1 |
| A | 4 | 95 | 2123010 | 14335.71 | 596 | 580 | 148.1 |
| A | 3 | 62 | 875996 | 5912.9 | 596 | 580 | 148.1 |
| B | 4 | 206 | 3049864 | 20560.81 | 689 | 664 | 148.3 |
| B | 10 | 247 | 165561 | 1111.9 | 689 | 664 | 148.3 |
| B | 0 | 63 | 66011 | 440.64 | 689 | 664 | 148.3 |
| C | 12 | 254 | 1000180 | 5124.41 | 715 | 709 | 195.0 |
| C | 15 | 147 | 990509 | 5074.83 | 715 | 709 | 195.0 |
| C | 15 | 230 | 160647 | 820.02 | 715 | 709 | 195.0 |
| D | 8 | 129 | 5642840 | 33646.99 | 594 | 567 | 167.7 |
| D | 5 | 113 | 913741 | 5445.6 | 594 | 567 | 167.7 |
| D | 3 | 12 | 546024 | 3252.76 | 594 | 567 | 167.7 |
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 |  |