Observation information
- date-obs: 2025-08-03
- time-obs: 20:43:26.978900000
- date-end: 2025-08-03
- time-end: 22:51:54.961300000
- obs_id: C09_011T08_9000006492
- exposure: 4057.09132725
- 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_9000006492_53282cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53282cztM0_level2_quad_clean.evt
|
| Size (bytes) | 612,161,280 | 89,637,120 |
| Size | 583.8 MB
| 85.5 MB
|
| Events in quadrant A | 3,173,525 | 632,483 |
| Events in quadrant B | 4,702,574 | 675,597 |
| Events in quadrant C | 10,223,861 | 388,447 |
| Events in quadrant D | 4,062,113 | 569,246 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14210 | 2 |
| B | 0 | 18515 | 2 |
| C | 0 | 34846 | 2 |
| D | 0 | 16707 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6420 | 115 | 1.791277% |
| B | 6420 | 299 | 4.657321% |
| C | 6420 | 2640 | 41.121495% |
| D | 6420 | 216 | 3.364486% |
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 | 7630 | 6421 | 51 | 51 | 0.67% | 0.79% |  |
| B | 7630 | 6420 | 192 | 192 | 2.52% | 2.99% |  |
| C | 7630 | 6420 | 2342 | 2342 | 30.69% | 36.48% |  |
| D | 7630 | 6421 | 176 | 176 | 2.31% | 2.74% |  |
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 | 0 | 8 | 149874 | 877.82 | 674 | 658 | 170.0 |
| A | 12 | 15 | 46318 | 268.61 | 674 | 658 | 170.0 |
| A | 3 | 14 | 46059 | 267.09 | 674 | 658 | 170.0 |
| B | 10 | 28 | 564262 | 3977.77 | 670 | 649 | 141.7 |
| B | 2 | 249 | 440611 | 3105.09 | 670 | 649 | 141.7 |
| B | 0 | 213 | 306106 | 2155.8 | 670 | 649 | 141.7 |
| C | 1 | 241 | 2313358 | 16240.53 | 515 | 511 | 142.4 |
| C | 10 | 22 | 1970704 | 13834.45 | 515 | 511 | 142.4 |
| C | 15 | 224 | 1266993 | 8893.08 | 515 | 511 | 142.4 |
| D | 3 | 12 | 283096 | 1516.49 | 654 | 626 | 186.3 |
| D | 6 | 239 | 240637 | 1288.55 | 654 | 626 | 186.3 |
| D | 13 | 170 | 229984 | 1231.35 | 654 | 626 | 186.3 |
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 |  |