Observation information
- date-obs: 2025-09-14
- time-obs: 00:02:20.502000000
- date-end: 2025-09-14
- time-end: 02:08:36.473500000
- obs_id: A14_057T04_9000006508
- exposure: 790.102435291
- 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_53893cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53893cztM0_level2_quad_clean.evt
|
| Size (bytes) | 832,305,600 | 76,849,920 |
| Size | 793.7 MB
| 73.3 MB
|
| Events in quadrant A | 3,770,181 | 622,866 |
| Events in quadrant B | 3,561,672 | 668,821 |
| Events in quadrant C | 7,666,010 | 514,211 |
| Events in quadrant D | 15,310,684 | 70,282 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15805 | 1 |
| B | 0 | 14967 | 2 |
| C | 0 | 27233 | 1 |
| D | 0 | 49884 | 1 |
| 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 M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6456 | 203 | 3.144362% |
| B | 6455 | 168 | 2.602634% |
| C | 6455 | 1297 | 20.092951% |
| D | 6456 | 5807 | 89.947336% |
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 | 7576 | 6457 | 142 | 142 | 1.87% | 2.20% |  |
| B | 7575 | 6456 | 45 | 45 | 0.59% | 0.70% |  |
| C | 7575 | 6456 | 1071 | 1071 | 14.14% | 16.59% |  |
| D | 7575 | 6455 | 5067 | 5067 | 66.89% | 78.50% |  |
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 | 4 | 249 | 710623 | 4117.88 | 705 | 687 | 172.4 |
| A | 12 | 115 | 241930 | 1399.29 | 705 | 687 | 172.4 |
| A | 15 | 174 | 27381 | 154.83 | 705 | 687 | 172.4 |
| B | 5 | 172 | 265803 | 1749.23 | 705 | 680 | 151.6 |
| B | 5 | 250 | 236533 | 1556.12 | 705 | 680 | 151.6 |
| B | 0 | 213 | 85685 | 560.85 | 705 | 680 | 151.6 |
| C | 15 | 224 | 3616515 | 20429.94 | 643 | 639 | 177.0 |
| C | 4 | 5 | 972372 | 5490.36 | 643 | 639 | 177.0 |
| C | 15 | 209 | 273300 | 1540.55 | 643 | 639 | 177.0 |
| D | 8 | 176 | 13637437 | 198567.33 | 235 | 224 | 68.7 |
| D | 12 | 6 | 447129 | 6507.25 | 235 | 224 | 68.7 |
| D | 6 | 239 | 67756 | 983.31 | 235 | 224 | 68.7 |
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 |  |