Observation information
- date-obs: 2025-09-15
- time-obs: 19:09:58.154900000
- date-end: 2025-09-15
- time-end: 21:27:23.120100000
- obs_id: A14_057T04_9000006508
- exposure: 2231.99125946
- 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_53920cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53920cztM0_level2_quad_clean.evt
|
| Size (bytes) | 680,947,200 | 82,779,840 |
| Size | 649.4 MB
| 78.9 MB
|
| Events in quadrant A | 3,345,623 | 643,736 |
| Events in quadrant B | 3,481,682 | 684,554 |
| Events in quadrant C | 4,850,379 | 537,254 |
| Events in quadrant D | 13,034,667 | 197,382 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14419 | 2 |
| B | 0 | 14777 | 2 |
| C | 0 | 18976 | 2 |
| D | 0 | 43138 | 2 |
| 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 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6359 | 115 | 1.808460% |
| B | 6359 | 151 | 2.374587% |
| C | 6358 | 819 | 12.881409% |
| D | 6358 | 4300 | 67.631331% |
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 | 7574 | 6360 | 95 | 95 | 1.25% | 1.49% |  |
| B | 7574 | 6359 | 72 | 72 | 0.95% | 1.13% |  |
| C | 7573 | 6359 | 794 | 794 | 10.48% | 12.49% |  |
| D | 7572 | 6357 | 4111 | 4111 | 54.29% | 64.67% |  |
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 | 15 | 174 | 258147 | 1489.06 | 701 | 683 | 172.9 |
| A | 7 | 14 | 91654 | 526.14 | 701 | 683 | 172.9 |
| A | 0 | 8 | 64987 | 371.91 | 701 | 683 | 172.9 |
| B | 0 | 213 | 268592 | 1794.76 | 697 | 671 | 149.3 |
| B | 5 | 185 | 106146 | 706.56 | 697 | 671 | 149.3 |
| B | 5 | 172 | 95721 | 636.72 | 697 | 671 | 149.3 |
| C | 1 | 241 | 2110953 | 12054.84 | 636 | 633 | 175.1 |
| C | 15 | 230 | 49148 | 277.13 | 636 | 633 | 175.1 |
| C | 13 | 3 | 39461 | 221.8 | 636 | 633 | 175.1 |
| D | 8 | 176 | 11045140 | 103111.48 | 373 | 357 | 107.1 |
| D | 2 | 165 | 195640 | 1823.12 | 373 | 357 | 107.1 |
| D | 3 | 12 | 130335 | 1213.44 | 373 | 357 | 107.1 |
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 |  |