Observation information
- date-obs: 2026-03-02
- time-obs: 21:46:03.466000000
- date-end: 2026-03-03
- time-end: 00:01:43.439200000
- obs_id: A14_083T05_9000006554
- exposure: 3694.4999299
- 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_56418cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56418cztM0_level2_quad_clean.evt
|
| Size (bytes) | 821,318,400 | 75,199,680 |
| Size | 783.3 MB
| 71.7 MB
|
| Events in quadrant A | 12,034,734 | 320,941 |
| Events in quadrant B | 5,004,567 | 571,478 |
| Events in quadrant C | 3,295,981 | 552,295 |
| Events in quadrant D | 9,567,713 | 381,048 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40134 | 2 |
| B | 0 | 19278 | 2 |
| C | 0 | 14580 | 2 |
| D | 0 | 32969 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6459 | 3323 | 51.447593% |
| B | 6459 | 779 | 12.060691% |
| C | 6459 | 115 | 1.780461% |
| D | 6458 | 1925 | 29.807990% |
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 | 7871 | 6734 | 3076 | 3076 | 39.08% | 45.68% |  |
| B | 7870 | 6741 | 432 | 432 | 5.49% | 6.41% |  |
| C | 7871 | 6742 | 83 | 83 | 1.05% | 1.23% |  |
| D | 7870 | 6741 | 1800 | 1800 | 22.87% | 26.70% |  |
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 | 5638964 | 42993.09 | 520 | 507 | 131.1 |
| A | 4 | 95 | 2070054 | 15780.24 | 520 | 507 | 131.1 |
| A | 7 | 64 | 1082895 | 8253.18 | 520 | 507 | 131.1 |
| B | 4 | 206 | 1963380 | 13986.98 | 658 | 635 | 140.3 |
| B | 8 | 128 | 69213 | 488.7 | 658 | 635 | 140.3 |
| B | 10 | 247 | 63496 | 447.96 | 658 | 635 | 140.3 |
| C | 15 | 230 | 358206 | 1935.26 | 672 | 666 | 184.8 |
| C | 12 | 254 | 153046 | 824.79 | 672 | 666 | 184.8 |
| C | 6 | 223 | 66798 | 357.95 | 672 | 666 | 184.8 |
| D | 8 | 129 | 5267512 | 33668.41 | 544 | 519 | 156.4 |
| D | 2 | 120 | 511943 | 3269.2 | 544 | 519 | 156.4 |
| D | 2 | 249 | 486205 | 3104.67 | 544 | 519 | 156.4 |
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 |  |