Observation information
- date-obs: 2025-07-05
- time-obs: 22:45:11.641600000
- date-end: 2025-07-06
- time-end: 04:20:32.595400000
- obs_id: C09_011T08_9000006482
- exposure: 12253.9410766
- 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_9000006482_52854cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52854cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,547,023,040 | 217,324,800 |
| Size | 2.4 GB
| 207.3 MB
|
| Events in quadrant A | 22,283,657 | 1,445,536 |
| Events in quadrant B | 26,241,251 | 1,301,054 |
| Events in quadrant C | 13,922,624 | 1,529,733 |
| Events in quadrant D | 30,367,156 | 985,937 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 79593 | 4 |
| B | 0 | 91217 | 4 |
| C | 0 | 55436 | 4 |
| D | 0 | 103341 | 4 |
| 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 | 388 | 0 |
| B | 0 | 388 | 0 |
| C | 0 | 388 | 0 |
| D | 0 | 388 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19096 | 3706 | 19.407206% |
| B | 19097 | 5965 | 31.235273% |
| C | 19097 | 1683 | 8.812903% |
| D | 19097 | 7541 | 39.487878% |
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 | 20121 | 19100 | 2783 | 2783 | 13.83% | 14.57% |  |
| B | 20122 | 19101 | 4458 | 4458 | 22.15% | 23.34% |  |
| C | 20122 | 19101 | 1179 | 1179 | 5.86% | 6.17% |  |
| D | 20122 | 19101 | 6670 | 6670 | 33.15% | 34.92% |  |
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 | 6270763 | 13747.03 | 1827 | 1786 | 456.0 |
| A | 3 | 62 | 4624325 | 10136.61 | 1827 | 1786 | 456.0 |
| A | 0 | 8 | 879510 | 1924.73 | 1827 | 1786 | 456.0 |
| B | 8 | 3 | 17411707 | 47147.08 | 1737 | 1672 | 369.3 |
| B | 1 | 255 | 335533 | 904.11 | 1737 | 1672 | 369.3 |
| B | 4 | 81 | 266758 | 717.86 | 1737 | 1672 | 369.3 |
| C | 15 | 224 | 2554327 | 4960.68 | 1854 | 1835 | 514.5 |
| C | 2 | 12 | 1282561 | 2489.05 | 1854 | 1835 | 514.5 |
| C | 15 | 144 | 416988 | 806.84 | 1854 | 1835 | 514.5 |
| D | 12 | 2 | 17589189 | 39904.53 | 1540 | 1470 | 440.7 |
| D | 8 | 176 | 3616988 | 8203.2 | 1540 | 1470 | 440.7 |
| D | 8 | 48 | 614329 | 1390.51 | 1540 | 1470 | 440.7 |
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 |  |