Observation information
- date-obs: 2025-09-14
- time-obs: 22:31:39.321000000
- date-end: 2025-09-15
- time-end: 00:41:29.291000000
- obs_id: A14_057T04_9000006508
- exposure: 3351.27895999
- 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_53907cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53907cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,654,400 | 90,282,240 |
| Size | 531.8 MB
| 86.1 MB
|
| Events in quadrant A | 3,078,954 | 664,401 |
| Events in quadrant B | 3,131,536 | 710,144 |
| Events in quadrant C | 4,790,329 | 602,066 |
| Events in quadrant D | 9,129,071 | 298,515 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13868 | 1 |
| B | 0 | 14031 | 1 |
| C | 0 | 18873 | 4 |
| D | 0 | 31739 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 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 | 6580 | 39 | 0.592705% |
| B | 6581 | 58 | 0.881325% |
| C | 6580 | 424 | 6.443769% |
| D | 6580 | 3309 | 50.288754% |
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 | 7790 | 6581 | 13 | 13 | 0.17% | 0.20% |  |
| B | 7791 | 6582 | 17 | 17 | 0.22% | 0.26% |  |
| C | 7789 | 6580 | 373 | 373 | 4.79% | 5.67% |  |
| D | 7790 | 6580 | 2287 | 2287 | 29.36% | 34.76% |  |
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 | 4 | 249 | 68544 | 376.1 | 731 | 715 | 180.4 |
| A | 0 | 8 | 35445 | 192.57 | 731 | 715 | 180.4 |
| A | 8 | 246 | 29410 | 159.11 | 731 | 715 | 180.4 |
| B | 4 | 81 | 53999 | 342.93 | 727 | 703 | 155.4 |
| B | 5 | 185 | 48336 | 306.49 | 727 | 703 | 155.4 |
| B | 10 | 247 | 43231 | 273.64 | 727 | 703 | 155.4 |
| C | 15 | 224 | 1247769 | 6519.07 | 692 | 687 | 191.3 |
| C | 1 | 241 | 425586 | 2221.14 | 692 | 687 | 191.3 |
| C | 13 | 3 | 208210 | 1084.82 | 692 | 687 | 191.3 |
| D | 8 | 176 | 6821353 | 55279.15 | 420 | 401 | 123.4 |
| D | 5 | 113 | 248997 | 2014.7 | 420 | 401 | 123.4 |
| D | 10 | 172 | 215248 | 1741.19 | 420 | 401 | 123.4 |
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 |  |