Observation information
- date-obs: 2025-09-13
- time-obs: 08:33:19.628000000
- date-end: 2025-09-13
- time-end: 10:30:02.614200000
- obs_id: A14_057T04_9000006508
- exposure: 4439.99673641
- 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_53883cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53883cztM0_level2_quad_clean.evt
|
| Size (bytes) | 715,616,640 | 83,738,880 |
| Size | 682.5 MB
| 79.9 MB
|
| Events in quadrant A | 5,742,945 | 543,702 |
| Events in quadrant B | 3,442,807 | 661,046 |
| Events in quadrant C | 6,958,270 | 494,097 |
| Events in quadrant D | 9,840,950 | 381,693 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22493 | 839 |
| B | 0 | 15096 | 399 |
| C | 0 | 26750 | 1699 |
| D | 0 | 35297 | 1613 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 135 | 3 |
| B | 0 | 134 | 6 |
| C | 0 | 137 | 5 |
| D | 0 | 138 | 6 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 1 |
| B | 1 | 1 | 1 |
| C | 1 | -1 | -1 |
| D | 1 | -1 | -1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6537 | 984 | 15.052777% |
| B | 6576 | 101 | 1.535888% |
| C | 6472 | 1245 | 19.236712% |
| D | 6470 | 2290 | 35.394127% |
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 | 6978 | 6615 | 787 | 787 | 11.28% | 11.90% |  |
| B | 6976 | 6653 | 25 | 25 | 0.36% | 0.38% |  |
| C | 6982 | 6555 | 936 | 936 | 13.41% | 14.28% |  |
| D | 6964 | 6560 | 1881 | 1881 | 27.01% | 28.67% |  |
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 | 2690251 | 16031.98 | 677 | 658 | 167.8 |
| A | 0 | 8 | 253200 | 1505.34 | 677 | 658 | 167.8 |
| A | 3 | 45 | 35968 | 210.47 | 677 | 658 | 167.8 |
| B | 7 | 0 | 231790 | 1478.96 | 721 | 698 | 156.3 |
| B | 5 | 185 | 106635 | 677.99 | 721 | 698 | 156.3 |
| B | 8 | 234 | 71240 | 451.46 | 721 | 698 | 156.3 |
| C | 15 | 224 | 3853215 | 22349.72 | 633 | 628 | 172.4 |
| C | 15 | 209 | 375223 | 2173.11 | 633 | 628 | 172.4 |
| C | 15 | 158 | 67604 | 388.54 | 633 | 628 | 172.4 |
| D | 8 | 176 | 5894681 | 35060.78 | 589 | 562 | 168.1 |
| D | 6 | 239 | 1130215 | 6719.67 | 589 | 562 | 168.1 |
| D | 13 | 153 | 116058 | 687.02 | 589 | 562 | 168.1 |
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 |  |