Observation information
- date-obs: 2025-09-10
- time-obs: 17:57:33.132900000
- date-end: 2025-09-10
- time-end: 20:01:17.115900000
- obs_id: A14_057T04_9000006508
- exposure: 406.847852409
- 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_53845cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53845cztM0_level2_quad_clean.evt
|
| Size (bytes) | 190,275,840 | 21,879,360 |
| Size | 181.5 MB
| 20.9 MB
|
| Events in quadrant A | 1,560,126 | 183,755 |
| Events in quadrant B | 1,556,471 | 191,576 |
| Events in quadrant C | 1,802,404 | 99,429 |
| Events in quadrant D | 1,966,169 | 37,822 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18115 | 11872 |
| B | 0 | 16985 | 10566 |
| C | 0 | 28752 | 22195 |
| D | 0 | 42617 | 36012 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 127 | 54 |
| B | 0 | 123 | 60 |
| C | 0 | 125 | 59 |
| D | 0 | 125 | 73 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 3 |
| B | 0 | 12 | 5 |
| C | 0 | 11 | 4 |
| D | 0 | 11 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2497 | 63 | 2.523028% |
| B | 2526 | 58 | 2.296120% |
| C | 1783 | 231 | 12.955693% |
| D | 1147 | 483 | 42.109852% |
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 | 7354 | 3549 | 59 | 59 | 0.80% | 1.66% |  |
| B | 7399 | 3661 | 39 | 39 | 0.53% | 1.07% |  |
| C | 7371 | 2609 | 220 | 220 | 2.98% | 8.43% |  |
| D | 7351 | 1552 | 467 | 467 | 6.35% | 30.09% |  |
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 | 8 | 249 | 245214 | 3672.71 | 264 | 257 | 66.7 |
| A | 12 | 115 | 139482 | 2087.44 | 264 | 257 | 66.7 |
| A | 8 | 245 | 68892 | 1029.06 | 264 | 257 | 66.7 |
| B | 5 | 172 | 225073 | 3899.93 | 264 | 254 | 57.6 |
| B | 0 | 171 | 93206 | 1612.44 | 264 | 254 | 57.6 |
| B | 5 | 185 | 53790 | 928.69 | 264 | 254 | 57.6 |
| C | 1 | 241 | 453381 | 9037.22 | 175 | 174 | 50.1 |
| C | 15 | 224 | 451382 | 8997.36 | 175 | 174 | 50.1 |
| C | 13 | 3 | 75488 | 1501.81 | 175 | 174 | 50.1 |
| D | 15 | 93 | 1306584 | 45671.26 | 93 | 89 | 28.6 |
| D | 13 | 153 | 103087 | 3600.51 | 93 | 89 | 28.6 |
| D | 2 | 172 | 70055 | 2445.81 | 93 | 89 | 28.6 |
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 |  |