Observation information
- date-obs: 2026-02-17
- time-obs: 16:36:21.417200000
- date-end: 2026-02-17
- time-end: 18:40:00.014900000
- obs_id: A14_083T04_9000006550
- exposure: 4009.96995556
- sourceid: NGC1522
- observer: Rakshit
- ra_pnt: 61.533
- dec_pnt: -52.66842
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T04_9000006550_56221cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56221cztM0_level2_quad_clean.evt
|
| Size (bytes) | 736,675,200 | 82,094,400 |
| Size | 702.5 MB
| 78.3 MB
|
| Events in quadrant A | 13,018,000 | 331,529 |
| Events in quadrant B | 4,000,403 | 631,275 |
| Events in quadrant C | 4,610,876 | 538,774 |
| Events in quadrant D | 5,086,911 | 486,646 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 43692 | 0 |
| B | 0 | 16994 | 0 |
| C | 0 | 18788 | 0 |
| D | 0 | 20223 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7139 | 3538 | 49.558762% |
| B | 7139 | 217 | 3.039641% |
| C | 7140 | 277 | 3.879552% |
| D | 7140 | 372 | 5.210084% |
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 | 7418 | 7227 | 3433 | 3433 | 46.28% | 47.50% |  |
| B | 7419 | 7419 | 140 | 140 | 1.89% | 1.89% |  |
| C | 7420 | 7420 | 305 | 305 | 4.11% | 4.11% |  |
| D | 7420 | 7414 | 402 | 402 | 5.42% | 5.42% |  |
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 | 15 | 32 | 7026907 | 47793.81 | 584 | 568 | 147.0 |
| A | 8 | 176 | 3225942 | 21939.29 | 584 | 568 | 147.0 |
| A | 10 | 251 | 199151 | 1350.78 | 584 | 568 | 147.0 |
| B | 5 | 185 | 462684 | 2967.31 | 731 | 706 | 155.7 |
| B | 0 | 213 | 176673 | 1130.24 | 731 | 706 | 155.7 |
| B | 0 | 171 | 124314 | 793.94 | 731 | 706 | 155.7 |
| C | 12 | 254 | 1150899 | 5986.19 | 702 | 696 | 192.1 |
| C | 12 | 252 | 310340 | 1611.53 | 702 | 696 | 192.1 |
| C | 9 | 38 | 121632 | 629.41 | 702 | 696 | 192.1 |
| D | 2 | 249 | 678482 | 3396.5 | 696 | 664 | 199.6 |
| D | 6 | 239 | 457778 | 2290.57 | 696 | 664 | 199.6 |
| D | 14 | 52 | 270766 | 1353.46 | 696 | 664 | 199.6 |
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 |  |