Observation information
- date-obs: 2025-05-24
- time-obs: 22:30:18.172400000
- date-end: 2025-05-25
- time-end: 04:11:02.123700000
- obs_id: C09_011T08_9000006472
- exposure: 13181.0309482
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T08_9000006472_52230cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52230cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,134,517,760 | 226,068,480 |
| Size | 2.0 GB
| 215.6 MB
|
| Events in quadrant A | 10,888,073 | 1,644,459 |
| Events in quadrant B | 16,327,493 | 1,655,606 |
| Events in quadrant C | 23,353,397 | 1,225,110 |
| Events in quadrant D | 26,989,533 | 1,016,413 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45968 | 8 |
| B | 0 | 61614 | 22 |
| C | 0 | 82703 | 13 |
| D | 0 | 93368 | 26 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 386 | 0 |
| B | 0 | 386 | 0 |
| C | 0 | 386 | 0 |
| D | 0 | 386 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18872 | 527 | 2.792497% |
| B | 18869 | 1948 | 10.323812% |
| C | 18872 | 5184 | 27.469267% |
| D | 18872 | 6369 | 33.748410% |
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 | 20444 | 18878 | 454 | 454 | 2.22% | 2.40% |  |
| B | 20444 | 18874 | 1527 | 1527 | 7.47% | 8.09% |  |
| C | 20444 | 18875 | 4714 | 4714 | 23.06% | 24.97% |  |
| D | 20445 | 18873 | 6086 | 6086 | 29.77% | 32.25% |  |
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 | 878117 | 1823.94 | 1938 | 1887 | 480.4 |
| A | 12 | 3 | 865186 | 1797.02 | 1938 | 1887 | 480.4 |
| A | 11 | 3 | 249691 | 515.82 | 1938 | 1887 | 480.4 |
| B | 5 | 32 | 5101742 | 13088.3 | 1857 | 1793 | 389.7 |
| B | 10 | 254 | 1110479 | 2845.29 | 1857 | 1793 | 389.7 |
| B | 4 | 81 | 551340 | 1410.33 | 1857 | 1793 | 389.7 |
| C | 15 | 224 | 12661344 | 28064.33 | 1633 | 1619 | 451.1 |
| C | 15 | 147 | 934203 | 2067.37 | 1633 | 1619 | 451.1 |
| C | 2 | 239 | 721592 | 1596.05 | 1633 | 1619 | 451.1 |
| D | 12 | 2 | 6729479 | 14801.85 | 1558 | 1484 | 454.5 |
| D | 15 | 93 | 6134181 | 13492.17 | 1558 | 1484 | 454.5 |
| D | 8 | 176 | 2522896 | 5547.2 | 1558 | 1484 | 454.5 |
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 |  |