Observation information
- date-obs: 2025-09-17
- time-obs: 16:28:58.783200000
- date-end: 2025-09-17
- time-end: 18:35:07.765000000
- obs_id: A14_057T04_9000006508
- exposure: 866.101241589
- 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_53948cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53948cztM0_level2_quad_clean.evt
|
| Size (bytes) | 795,816,000 | 72,671,040 |
| Size | 758.9 MB
| 69.3 MB
|
| Events in quadrant A | 3,252,443 | 641,187 |
| Events in quadrant B | 3,897,561 | 667,802 |
| Events in quadrant C | 9,457,020 | 366,383 |
| Events in quadrant D | 12,352,004 | 77,109 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13994 | 1 |
| B | 0 | 15992 | 1 |
| C | 0 | 32624 | 1 |
| D | 0 | 41106 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 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 | 6419 | 43 | 0.669886% |
| B | 6420 | 240 | 3.738318% |
| C | 6420 | 2719 | 42.352025% |
| D | 6420 | 5628 | 87.663551% |
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 | 7569 | 6420 | 16 | 16 | 0.21% | 0.25% |  |
| B | 7570 | 6421 | 160 | 160 | 2.11% | 2.49% |  |
| C | 7570 | 6421 | 2580 | 2580 | 34.08% | 40.18% |  |
| D | 7569 | 6420 | 3128 | 3128 | 41.33% | 48.72% |  |
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 | 3 | 14 | 162401 | 926.87 | 697 | 680 | 174.5 |
| A | 3 | 62 | 79921 | 454.16 | 697 | 680 | 174.5 |
| A | 15 | 174 | 66539 | 377.46 | 697 | 680 | 174.5 |
| B | 0 | 213 | 820937 | 5601.26 | 686 | 662 | 146.4 |
| B | 0 | 155 | 88678 | 601.02 | 686 | 662 | 146.4 |
| B | 3 | 16 | 55437 | 374.03 | 686 | 662 | 146.4 |
| C | 1 | 241 | 7115447 | 47683.91 | 538 | 531 | 149.2 |
| C | 13 | 3 | 73566 | 489.47 | 538 | 531 | 149.2 |
| C | 12 | 2 | 51627 | 342.44 | 538 | 531 | 149.2 |
| D | 8 | 176 | 11141145 | 197747.51 | 191 | 182 | 56.3 |
| D | 6 | 239 | 108809 | 1928.08 | 191 | 182 | 56.3 |
| D | 2 | 172 | 83185 | 1473.27 | 191 | 182 | 56.3 |
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 |  |