Observation information
- date-obs: 2025-05-25
- time-obs: 03:57:10.125700000
- date-end: 2025-05-25
- time-end: 05:53:50.108700000
- obs_id: C09_011T08_9000006472
- exposure: 3569.20598024
- 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_52231cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52231cztM0_level2_quad_clean.evt
|
| Size (bytes) | 620,213,760 | 75,024,000 |
| Size | 591.5 MB
| 71.5 MB
|
| Events in quadrant A | 5,048,261 | 502,819 |
| Events in quadrant B | 4,276,190 | 563,339 |
| Events in quadrant C | 8,925,590 | 322,154 |
| Events in quadrant D | 4,254,311 | 473,671 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19498 | 435 |
| B | 0 | 17076 | 333 |
| C | 0 | 31248 | 687 |
| D | 0 | 17056 | 286 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 121 | 1 |
| B | 0 | 121 | 1 |
| C | 0 | 122 | 2 |
| D | 0 | 120 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5849 | 541 | 9.249444% |
| B | 5861 | 242 | 4.128988% |
| C | 5845 | 2550 | 43.627032% |
| D | 5859 | 268 | 4.574159% |
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 | 7000 | 5868 | 525 | 525 | 7.50% | 8.95% |  |
| B | 7001 | 5877 | 149 | 149 | 2.13% | 2.54% |  |
| C | 7001 | 5865 | 2281 | 2281 | 32.58% | 38.89% |  |
| D | 7001 | 5878 | 265 | 265 | 3.79% | 4.51% |  |
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 | 12 | 3 | 938800 | 6434.72 | 588 | 574 | 145.8 |
| A | 4 | 249 | 793239 | 5436.4 | 588 | 574 | 145.8 |
| A | 6 | 162 | 415141 | 2843.26 | 588 | 574 | 145.8 |
| B | 5 | 32 | 888755 | 6993.98 | 593 | 573 | 127.0 |
| B | 10 | 254 | 243518 | 1913.06 | 593 | 573 | 127.0 |
| B | 7 | 236 | 159932 | 1254.87 | 593 | 573 | 127.0 |
| C | 15 | 224 | 6006663 | 47241.73 | 449 | 445 | 127.1 |
| C | 15 | 231 | 428481 | 3366.7 | 449 | 445 | 127.1 |
| C | 13 | 3 | 175275 | 1375.12 | 449 | 445 | 127.1 |
| D | 12 | 2 | 569144 | 3472.18 | 574 | 549 | 163.8 |
| D | 6 | 42 | 425077 | 2592.42 | 574 | 549 | 163.8 |
| D | 8 | 176 | 320867 | 1956.05 | 574 | 549 | 163.8 |
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 |  |