Observation information
- date-obs: 2025-09-17
- time-obs: 00:31:03.911600000
- date-end: 2025-09-17
- time-end: 02:57:27.879200000
- obs_id: A14_057T04_9000006508
- exposure: 4069.30652034
- 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_53938cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53938cztM0_level2_quad_clean.evt
|
| Size (bytes) | 711,302,400 | 94,132,800 |
| Size | 678.4 MB
| 89.8 MB
|
| Events in quadrant A | 4,469,783 | 671,983 |
| Events in quadrant B | 4,036,380 | 710,944 |
| Events in quadrant C | 5,048,579 | 614,539 |
| Events in quadrant D | 12,210,605 | 346,510 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18224 | 2 |
| B | 0 | 17261 | 2 |
| C | 0 | 20153 | 2 |
| D | 0 | 41272 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7274 | 284 | 3.904317% |
| B | 7274 | 411 | 5.650261% |
| C | 7274 | 684 | 9.403354% |
| D | 7274 | 3438 | 47.264229% |
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 | 8784 | 7278 | 60 | 60 | 0.68% | 0.82% |  |
| B | 8784 | 7278 | 103 | 103 | 1.17% | 1.42% |  |
| C | 8784 | 7278 | 567 | 567 | 6.45% | 7.79% |  |
| D | 8784 | 7278 | 3110 | 3110 | 35.41% | 42.73% |  |
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 | 14 | 235 | 414513 | 2069.68 | 816 | 794 | 199.9 |
| A | 12 | 115 | 271876 | 1356.12 | 816 | 794 | 199.9 |
| A | 0 | 8 | 241043 | 1201.87 | 816 | 794 | 199.9 |
| B | 0 | 213 | 525757 | 3020.12 | 805 | 778 | 173.8 |
| B | 5 | 236 | 103307 | 589.83 | 805 | 778 | 173.8 |
| B | 0 | 155 | 50601 | 286.62 | 805 | 778 | 173.8 |
| C | 1 | 241 | 1639959 | 7827.68 | 772 | 766 | 209.4 |
| C | 12 | 2 | 89658 | 424.49 | 772 | 766 | 209.4 |
| C | 12 | 252 | 66801 | 315.34 | 772 | 766 | 209.4 |
| D | 8 | 176 | 7279321 | 43290.3 | 589 | 563 | 168.1 |
| D | 0 | 129 | 876208 | 5207.88 | 589 | 563 | 168.1 |
| D | 10 | 172 | 826789 | 4913.97 | 589 | 563 | 168.1 |
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 |  |