Observation information
- date-obs: 2025-09-12
- time-obs: 15:10:42.771400000
- date-end: 2025-09-12
- time-end: 17:08:54.754400000
- obs_id: A14_057T04_9000006508
- exposure: 3676.0888049
- sourceid: Abell_2142
- observer: divya_astro
- ra_pnt: 239.5833
- dec_pnt: 27.23341
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_057T04_9000006508_53872cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53872cztM0_level2_quad_clean.evt
|
| Size (bytes) | 636,724,800 | 81,527,040 |
| Size | 607.2 MB
| 77.8 MB
|
| Events in quadrant A | 4,251,545 | 576,853 |
| Events in quadrant B | 3,509,579 | 619,514 |
| Events in quadrant C | 9,942,480 | 332,617 |
| Events in quadrant D | 5,380,946 | 502,778 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17028 | 1 |
| B | 0 | 14819 | 1 |
| C | 0 | 33930 | 1 |
| D | 0 | 20345 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6247 | 334 | 5.346566% |
| B | 6248 | 161 | 2.576825% |
| C | 6248 | 2809 | 44.958387% |
| D | 6248 | 528 | 8.450704% |
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 | 7092 | 6248 | 251 | 251 | 3.54% | 4.02% |  |
| B | 7093 | 6248 | 50 | 50 | 0.70% | 0.80% |  |
| C | 7093 | 6249 | 2166 | 2166 | 30.54% | 34.66% |  |
| D | 7093 | 6249 | 477 | 477 | 6.72% | 7.63% |  |
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 | 62 | 1029274 | 6345.12 | 656 | 640 | 162.1 |
| A | 10 | 253 | 199694 | 1227.86 | 656 | 640 | 162.1 |
| A | 15 | 174 | 190728 | 1172.56 | 656 | 640 | 162.1 |
| B | 8 | 234 | 278404 | 1961.21 | 659 | 636 | 141.6 |
| B | 0 | 171 | 136930 | 962.32 | 659 | 636 | 141.6 |
| B | 5 | 185 | 110812 | 777.91 | 659 | 636 | 141.6 |
| C | 13 | 3 | 2879851 | 21939.69 | 478 | 474 | 131.2 |
| C | 1 | 241 | 2025196 | 15427.56 | 478 | 474 | 131.2 |
| C | 15 | 224 | 1970386 | 15009.93 | 478 | 474 | 131.2 |
| D | 8 | 176 | 2096853 | 11528.7 | 633 | 606 | 181.8 |
| D | 2 | 249 | 146083 | 800.08 | 633 | 606 | 181.8 |
| D | 7 | 70 | 119164 | 652.03 | 633 | 606 | 181.8 |
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 |  |