Observation information
- date-obs: 2025-05-26
- time-obs: 09:17:43.885500000
- date-end: 2025-05-26
- time-end: 11:21:17.868900000
- obs_id: C09_011T08_9000006472
- exposure: 4441.64112902
- 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_52250cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52250cztM0_level2_quad_clean.evt
|
| Size (bytes) | 706,947,840 | 84,879,360 |
| Size | 674.2 MB
| 80.9 MB
|
| Events in quadrant A | 3,705,328 | 612,834 |
| Events in quadrant B | 4,249,062 | 644,827 |
| Events in quadrant C | 8,025,420 | 481,494 |
| Events in quadrant D | 9,703,204 | 392,125 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15338 | 1 |
| B | 0 | 16935 | 1 |
| C | 0 | 28191 | 1 |
| D | 0 | 33139 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6279 | 171 | 2.723364% |
| B | 6280 | 283 | 4.506369% |
| C | 6280 | 1479 | 23.550955% |
| D | 6280 | 2076 | 33.057325% |
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 | 7414 | 6280 | 67 | 67 | 0.90% | 1.07% |  |
| B | 7415 | 6281 | 133 | 133 | 1.79% | 2.12% |  |
| C | 7415 | 6281 | 1299 | 1299 | 17.52% | 20.68% |  |
| D | 7415 | 6281 | 2102 | 2102 | 28.35% | 33.47% |  |
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 | 3 | 79 | 328542 | 1973.84 | 667 | 651 | 166.1 |
| A | 11 | 3 | 206360 | 1238.33 | 667 | 651 | 166.1 |
| A | 5 | 240 | 164633 | 987.14 | 667 | 651 | 166.1 |
| B | 5 | 32 | 283834 | 2046.37 | 653 | 631 | 138.4 |
| B | 4 | 81 | 261064 | 1881.84 | 653 | 631 | 138.4 |
| B | 12 | 32 | 216686 | 1561.17 | 653 | 631 | 138.4 |
| C | 15 | 224 | 3431757 | 21242.51 | 585 | 578 | 161.5 |
| C | 9 | 38 | 887305 | 5489.74 | 585 | 578 | 161.5 |
| C | 15 | 189 | 331337 | 2047.73 | 585 | 578 | 161.5 |
| D | 6 | 42 | 5844262 | 36600.39 | 560 | 535 | 159.7 |
| D | 8 | 176 | 988202 | 6185.95 | 560 | 535 | 159.7 |
| D | 10 | 181 | 123341 | 769.16 | 560 | 535 | 159.7 |
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 |  |