Observation information
- date-obs: 2025-09-11
- time-obs: 11:28:55.991900000
- date-end: 2025-09-11
- time-end: 16:51:12.949300000
- obs_id: A14_057T04_9000006508
- exposure: 14673.1070602
- 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_53857cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53857cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,604,329,920 | 234,037,440 |
| Size | 1.5 GB
| 223.2 MB
|
| Events in quadrant A | 10,893,937 | 1,627,806 |
| Events in quadrant B | 14,046,206 | 1,570,313 |
| Events in quadrant C | 20,051,247 | 1,259,105 |
| Events in quadrant D | 13,027,315 | 1,406,741 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44414 | 3 |
| B | 0 | 54006 | 5 |
| C | 0 | 71874 | 3 |
| D | 0 | 50850 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 358 | 0 |
| B | 0 | 358 | 0 |
| C | 0 | 358 | 0 |
| D | 0 | 358 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 17722 | 591 | 3.334838% |
| B | 17721 | 2065 | 11.652841% |
| C | 17721 | 3545 | 20.004514% |
| D | 17722 | 1283 | 7.239589% |
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 | 19337 | 17726 | 346 | 346 | 1.79% | 1.95% |  |
| B | 19336 | 17725 | 1547 | 1547 | 8.00% | 8.73% |  |
| C | 19336 | 17725 | 3164 | 3164 | 16.36% | 17.85% |  |
| D | 19337 | 17726 | 1308 | 1308 | 6.76% | 7.38% |  |
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 | 1236678 | 2638.99 | 1907 | 1858 | 467.9 |
| A | 10 | 253 | 878234 | 1872.94 | 1907 | 1858 | 467.9 |
| A | 0 | 8 | 753436 | 1606.23 | 1907 | 1858 | 467.9 |
| B | 5 | 172 | 2489370 | 6481.36 | 1802 | 1740 | 383.8 |
| B | 0 | 213 | 1843067 | 4797.46 | 1802 | 1740 | 383.8 |
| B | 5 | 185 | 1509274 | 3927.78 | 1802 | 1740 | 383.8 |
| C | 15 | 224 | 8108431 | 17485.25 | 1694 | 1681 | 463.6 |
| C | 1 | 241 | 1716868 | 3699.45 | 1694 | 1681 | 463.6 |
| C | 12 | 2 | 1348374 | 2904.65 | 1694 | 1681 | 463.6 |
| D | 10 | 172 | 1853264 | 3600.08 | 1823 | 1749 | 514.3 |
| D | 3 | 12 | 1421338 | 2760.25 | 1823 | 1749 | 514.3 |
| D | 3 | 224 | 660592 | 1281.05 | 1823 | 1749 | 514.3 |
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 |  |