Observation information
- date-obs: 2026-03-26
- time-obs: 23:17:18.482200000
- date-end: 2026-03-27
- time-end: 04:56:24.430600000
- obs_id: A14_083T05_9000006560
- exposure: 17131.0454216
- 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_9000006560_56777cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56777cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,399,040,640 | 260,470,080 |
| Size | 1.3 GB
| 248.4 MB
|
| Events in quadrant A | 12,856,498 | 1,714,459 |
| Events in quadrant B | 14,010,698 | 1,713,240 |
| Events in quadrant C | 14,011,170 | 1,609,277 |
| Events in quadrant D | 9,444,011 | 1,542,314 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 386 | 0 |
| B | 0 | 386 | 0 |
| C | 0 | 386 | 0 |
| D | 0 | 386 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 51191 | 3 |
| B | 0 | 55052 | 3 |
| C | 0 | 54695 | 3 |
| D | 0 | 42277 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18961 | 475 | 2.505142% |
| B | 18962 | 2001 | 10.552684% |
| C | 18962 | 598 | 3.153676% |
| D | 18962 | 325 | 1.713954% |
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 | 20346 | 18963 | 180 | 180 | 0.88% | 0.95% |  |
| B | 20347 | 18965 | 1047 | 1047 | 5.15% | 5.52% |  |
| C | 20347 | 18965 | 393 | 393 | 1.93% | 2.07% |  |
| D | 20347 | 18965 | 190 | 190 | 0.93% | 1.00% |  |
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 | 14 | 3789355 | 7732.32 | 1992 | 1944 | 489.8 |
| A | 10 | 251 | 723981 | 1474.1 | 1992 | 1944 | 489.8 |
| A | 7 | 64 | 240371 | 486.77 | 1992 | 1944 | 489.8 |
| B | 4 | 206 | 3788083 | 9330.99 | 1908 | 1838 | 405.8 |
| B | 5 | 185 | 572763 | 1407.01 | 1908 | 1838 | 405.8 |
| B | 2 | 249 | 541597 | 1330.21 | 1908 | 1838 | 405.8 |
| C | 9 | 38 | 4524127 | 8534.96 | 1942 | 1918 | 529.8 |
| C | 14 | 96 | 881128 | 1659.37 | 1942 | 1918 | 529.8 |
| C | 15 | 230 | 377867 | 709.55 | 1942 | 1918 | 529.8 |
| D | 2 | 249 | 889071 | 1645.37 | 1938 | 1859 | 539.2 |
| D | 2 | 252 | 186004 | 341.5 | 1938 | 1859 | 539.2 |
| D | 5 | 173 | 164497 | 301.62 | 1938 | 1859 | 539.2 |
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 |  |