Observation information
- date-obs: 2025-09-13
- time-obs: 22:06:38.519300000
- date-end: 2025-09-14
- time-end: 00:25:53.499300000
- obs_id: A14_057T04_9000006508
- exposure: 657.770756364
- 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_53892cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53892cztM0_level2_quad_clean.evt
|
| Size (bytes) | 902,344,320 | 81,601,920 |
| Size | 860.5 MB
| 77.8 MB
|
| Events in quadrant A | 5,426,002 | 645,399 |
| Events in quadrant B | 3,529,710 | 724,052 |
| Events in quadrant C | 7,444,488 | 573,324 |
| Events in quadrant D | 16,483,490 | 61,217 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20652 | 2 |
| B | 0 | 15119 | 2 |
| C | 0 | 26775 | 2 |
| D | 0 | 53280 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6691 | 424 | 6.336870% |
| B | 6691 | 109 | 1.629054% |
| C | 6691 | 1106 | 16.529667% |
| D | 6691 | 6113 | 91.361530% |
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 | 7901 | 6692 | 411 | 411 | 5.20% | 6.14% |  |
| B | 7901 | 6692 | 39 | 39 | 0.49% | 0.58% |  |
| C | 7901 | 6692 | 882 | 882 | 11.16% | 13.18% |  |
| D | 7900 | 6690 | 5559 | 5559 | 70.37% | 83.09% |  |
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 | 12 | 115 | 1967929 | 10832.66 | 736 | 717 | 181.6 |
| A | 4 | 249 | 414954 | 2281.04 | 736 | 717 | 181.6 |
| A | 15 | 174 | 104892 | 573.65 | 736 | 717 | 181.6 |
| B | 10 | 245 | 204614 | 1277.79 | 744 | 718 | 159.6 |
| B | 5 | 172 | 85439 | 530.94 | 744 | 718 | 159.6 |
| B | 0 | 213 | 56613 | 350.29 | 744 | 718 | 159.6 |
| C | 15 | 224 | 3842739 | 20498.76 | 684 | 678 | 187.4 |
| C | 4 | 5 | 485938 | 2589.03 | 684 | 678 | 187.4 |
| C | 12 | 2 | 131552 | 698.26 | 684 | 678 | 187.4 |
| D | 8 | 176 | 7986312 | 136843.84 | 201 | 192 | 58.4 |
| D | 7 | 70 | 7428304 | 127282.26 | 201 | 192 | 58.4 |
| D | 6 | 239 | 76334 | 1304.71 | 201 | 192 | 58.4 |
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 |  |