Observation information
- date-obs: 2025-09-13
- time-obs: 18:50:28.546700000
- date-end: 2025-09-13
- time-end: 20:53:14.522000000
- obs_id: A14_057T04_9000006508
- exposure: 4455.63205338
- 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_53890cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53890cztM0_level2_quad_clean.evt
|
| Size (bytes) | 686,678,400 | 82,814,400 |
| Size | 654.9 MB
| 79.0 MB
|
| Events in quadrant A | 4,839,383 | 598,971 |
| Events in quadrant B | 3,239,001 | 656,662 |
| Events in quadrant C | 8,789,372 | 424,470 |
| Events in quadrant D | 8,072,471 | 396,367 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18801 | 1 |
| B | 0 | 13889 | 1 |
| C | 0 | 30440 | 2 |
| D | 0 | 28234 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6177 | 286 | 4.630079% |
| B | 6177 | 66 | 1.068480% |
| C | 6176 | 1953 | 31.622409% |
| D | 6176 | 1860 | 30.116580% |
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 | 7367 | 6178 | 346 | 346 | 4.70% | 5.60% |  |
| B | 7367 | 6178 | 36 | 36 | 0.49% | 0.58% |  |
| C | 7366 | 6177 | 1676 | 1676 | 22.75% | 27.13% |  |
| D | 7365 | 6176 | 1549 | 1549 | 21.03% | 25.08% |  |
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 | 115 | 1722403 | 10403.49 | 665 | 649 | 165.5 |
| A | 4 | 249 | 225422 | 1358.16 | 665 | 649 | 165.5 |
| A | 15 | 174 | 161084 | 969.41 | 665 | 649 | 165.5 |
| B | 5 | 185 | 288954 | 2017.34 | 668 | 644 | 142.9 |
| B | 0 | 213 | 69041 | 478.58 | 668 | 644 | 142.9 |
| B | 10 | 245 | 67599 | 468.49 | 668 | 644 | 142.9 |
| C | 15 | 224 | 5364774 | 34780.83 | 557 | 552 | 154.2 |
| C | 13 | 3 | 445505 | 2885.01 | 557 | 552 | 154.2 |
| C | 1 | 241 | 221819 | 1434.66 | 557 | 552 | 154.2 |
| D | 8 | 176 | 4806870 | 31416.98 | 531 | 508 | 153.0 |
| D | 6 | 239 | 395423 | 2581.38 | 531 | 508 | 153.0 |
| D | 10 | 118 | 149050 | 970.95 | 531 | 508 | 153.0 |
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 |  |