Observation information
- date-obs: 2026-04-20
- time-obs: 04:02:33.124000000
- date-end: 2026-04-20
- time-end: 06:17:21.103100000
- obs_id: A14_083T10_9000006566
- exposure: 4673.2134701
- sourceid: NGC1249
- observer: Rakshit
- ra_pnt: 47.50507
- dec_pnt: -53.33584
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T10_9000006566_57135cztM0_level2.fits
| modeM0/AS1A14_083T10_9000006566_57135cztM0_level2_quad_clean.evt
|
| Size (bytes) | 817,243,200 | 90,720,000 |
| Size | 779.4 MB
| 86.5 MB
|
| Events in quadrant A | 4,136,285 | 678,385 |
| Events in quadrant B | 4,886,737 | 693,960 |
| Events in quadrant C | 7,613,917 | 459,770 |
| Events in quadrant D | 13,040,431 | 399,684 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17844 | 2 |
| B | 0 | 19895 | 5 |
| C | 0 | 27929 | 2 |
| D | 0 | 43916 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7405 | 372 | 5.023633% |
| B | 7404 | 799 | 10.791464% |
| C | 7404 | 2446 | 33.036197% |
| D | 7404 | 3000 | 40.518639% |
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 | 7750 | 7405 | 204 | 204 | 2.63% | 2.75% |  |
| B | 7749 | 7404 | 375 | 375 | 4.84% | 5.06% |  |
| C | 7749 | 7406 | 2018 | 2018 | 26.04% | 27.25% |  |
| D | 7749 | 7404 | 3123 | 3123 | 40.30% | 42.18% |  |
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 | 951899 | 4799.7 | 809 | 787 | 198.2 |
| A | 5 | 113 | 33888 | 167.04 | 809 | 787 | 198.2 |
| A | 3 | 137 | 9958 | 46.28 | 809 | 787 | 198.2 |
| B | 10 | 16 | 1631873 | 9898.41 | 770 | 741 | 164.8 |
| B | 8 | 234 | 30664 | 181.58 | 770 | 741 | 164.8 |
| B | 5 | 172 | 28158 | 166.38 | 770 | 741 | 164.8 |
| C | 15 | 198 | 5000511 | 29774.4 | 622 | 616 | 167.9 |
| C | 12 | 252 | 132829 | 787.33 | 622 | 616 | 167.9 |
| C | 14 | 254 | 36144 | 211.57 | 622 | 616 | 167.9 |
| D | 15 | 142 | 9792476 | 52410.73 | 663 | 634 | 186.8 |
| D | 2 | 249 | 167920 | 895.4 | 663 | 634 | 186.8 |
| D | 8 | 240 | 114957 | 611.91 | 663 | 634 | 186.8 |
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 |  |