Observation information
- date-obs: 2025-09-11
- time-obs: 18:15:04.938000000
- date-end: 2025-09-11
- time-end: 20:18:57.920200000
- obs_id: A14_057T04_9000006508
- exposure: 4774.68133318
- 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_53860cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53860cztM0_level2_quad_clean.evt
|
| Size (bytes) | 549,633,600 | 89,153,280 |
| Size | 524.2 MB
| 85.0 MB
|
| Events in quadrant A | 3,755,806 | 615,135 |
| Events in quadrant B | 3,761,881 | 649,527 |
| Events in quadrant C | 8,349,681 | 442,494 |
| Events in quadrant D | 3,985,461 | 549,356 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15349 | 1 |
| B | 0 | 15587 | 1 |
| C | 0 | 29220 | 5 |
| D | 0 | 16222 | 1 |
| 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 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6348 | 113 | 1.780088% |
| B | 6349 | 141 | 2.220822% |
| C | 6348 | 1782 | 28.071834% |
| D | 6348 | 149 | 2.347196% |
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 | 7433 | 6349 | 94 | 94 | 1.26% | 1.48% |  |
| B | 7434 | 6350 | 107 | 107 | 1.44% | 1.69% |  |
| C | 7433 | 6349 | 1805 | 1805 | 24.28% | 28.43% |  |
| D | 7433 | 6349 | 147 | 147 | 1.98% | 2.32% |  |
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 | 8 | 249 | 479804 | 2862.55 | 676 | 659 | 167.4 |
| A | 0 | 8 | 315669 | 1881.96 | 676 | 659 | 167.4 |
| A | 15 | 174 | 163738 | 974.28 | 676 | 659 | 167.4 |
| B | 5 | 185 | 352720 | 2485.04 | 672 | 652 | 141.7 |
| B | 0 | 213 | 291247 | 2051.14 | 672 | 652 | 141.7 |
| B | 0 | 171 | 123791 | 869.17 | 672 | 652 | 141.7 |
| C | 1 | 241 | 3285586 | 20210.46 | 584 | 578 | 162.5 |
| C | 15 | 224 | 2328975 | 14325.07 | 584 | 578 | 162.5 |
| C | 13 | 3 | 191150 | 1172.46 | 584 | 578 | 162.5 |
| D | 3 | 224 | 394808 | 2124.35 | 653 | 624 | 185.6 |
| D | 3 | 12 | 224265 | 1205.26 | 653 | 624 | 185.6 |
| D | 2 | 249 | 185226 | 994.87 | 653 | 624 | 185.6 |
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 |  |