Observation information
- date-obs: 2025-07-18
- time-obs: 21:11:49.995100000
- date-end: 2025-07-18
- time-end: 23:24:10.976800000
- obs_id: C09_011T07_9000006488
- exposure: 4834.34273523
- 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_011T07_9000006488_53044cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53044cztM0_level2_quad_clean.evt
|
| Size (bytes) | 729,708,480 | 90,135,360 |
| Size | 695.9 MB
| 86.0 MB
|
| Events in quadrant A | 9,570,346 | 470,759 |
| Events in quadrant B | 3,759,041 | 680,859 |
| Events in quadrant C | 7,005,348 | 532,136 |
| Events in quadrant D | 6,154,463 | 574,771 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 33090 | 2 |
| B | 0 | 15932 | 2 |
| C | 0 | 25524 | 2 |
| D | 0 | 23036 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6746 | 2136 | 31.663208% |
| B | 6746 | 152 | 2.253187% |
| C | 6746 | 1147 | 17.002668% |
| D | 6746 | 525 | 7.782390% |
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 | 7615 | 6746 | 2022 | 2022 | 26.55% | 29.97% |  |
| B | 7615 | 6746 | 125 | 125 | 1.64% | 1.85% |  |
| C | 7615 | 6746 | 1145 | 1145 | 15.04% | 16.97% |  |
| D | 7616 | 6747 | 587 | 587 | 7.71% | 8.70% |  |
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 | 9 | 191 | 4984907 | 32950.23 | 606 | 591 | 151.3 |
| A | 7 | 206 | 1453585 | 9605.43 | 606 | 591 | 151.3 |
| A | 15 | 174 | 355321 | 2345.04 | 606 | 591 | 151.3 |
| B | 10 | 44 | 382222 | 2594.75 | 693 | 669 | 147.0 |
| B | 8 | 128 | 120473 | 814.73 | 693 | 669 | 147.0 |
| B | 4 | 81 | 81345 | 548.64 | 693 | 669 | 147.0 |
| C | 1 | 241 | 2054618 | 11606.43 | 638 | 632 | 177.0 |
| C | 15 | 224 | 828468 | 4677.84 | 638 | 632 | 177.0 |
| C | 7 | 80 | 802801 | 4532.8 | 638 | 632 | 177.0 |
| D | 12 | 17 | 1769607 | 8974.92 | 677 | 645 | 197.1 |
| D | 15 | 78 | 770687 | 3906.85 | 677 | 645 | 197.1 |
| D | 3 | 224 | 201375 | 1018.41 | 677 | 645 | 197.1 |
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 |  |