Observation information
- date-obs: 2026-03-23
- time-obs: 23:52:29.130100000
- date-end: 2026-03-24
- time-end: 02:34:55.105300000
- obs_id: A14_083T05_9000006560
- exposure: 8730.87310255
- 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_56733cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56733cztM0_level2_quad_clean.evt
|
| Size (bytes) | 656,861,760 | 136,247,040 |
| Size | 626.4 MB
| 129.9 MB
|
| Events in quadrant A | 6,444,261 | 884,652 |
| Events in quadrant B | 4,892,248 | 973,033 |
| Events in quadrant C | 7,328,705 | 787,332 |
| Events in quadrant D | 4,893,263 | 804,207 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 196 | 0 |
| B | 0 | 196 | 0 |
| C | 0 | 196 | 0 |
| D | 0 | 196 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 25700 | 0 |
| B | 0 | 21879 | 0 |
| C | 0 | 28764 | 3 |
| D | 0 | 21830 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 9746 | 418 | 4.288939% |
| B | 9747 | 254 | 2.605930% |
| C | 9745 | 1054 | 10.815803% |
| D | 9747 | 157 | 1.610752% |
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 | 9746 | 9746 | 308 | 308 | 3.16% | 3.16% |  |
| B | 9747 | 9747 | 50 | 50 | 0.51% | 0.51% |  |
| C | 9747 | 9746 | 691 | 691 | 7.09% | 7.09% |  |
| D | 9747 | 9747 | 106 | 106 | 1.09% | 1.09% |  |
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 | 933279 | 3585.17 | 1051 | 1023 | 260.0 |
| A | 3 | 62 | 702293 | 2696.87 | 1051 | 1023 | 260.0 |
| A | 10 | 251 | 575565 | 2209.51 | 1051 | 1023 | 260.0 |
| B | 4 | 206 | 345861 | 1490.51 | 1062 | 1020 | 231.4 |
| B | 8 | 128 | 164060 | 704.71 | 1062 | 1020 | 231.4 |
| B | 10 | 247 | 73915 | 315.07 | 1062 | 1020 | 231.4 |
| C | 15 | 230 | 1837559 | 6856.25 | 985 | 978 | 267.9 |
| C | 13 | 3 | 1135432 | 4235.1 | 985 | 978 | 267.9 |
| C | 12 | 252 | 133778 | 495.76 | 985 | 978 | 267.9 |
| D | 2 | 249 | 265268 | 919.81 | 1030 | 984 | 287.3 |
| D | 2 | 207 | 177355 | 613.84 | 1030 | 984 | 287.3 |
| D | 2 | 252 | 114955 | 396.66 | 1030 | 984 | 287.3 |
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 |  |