Observation information
- date-obs: 2025-08-13
- time-obs: 02:59:41.112500000
- date-end: 2025-08-13
- time-end: 08:29:18.063400000
- obs_id: C09_011T09_9000006494
- exposure: 5928.80241174
- 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_011T09_9000006494_53421cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53421cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,267,784,000 | 208,955,520 |
| Size | 2.1 GB
| 199.3 MB
|
| Events in quadrant A | 11,909,140 | 1,625,823 |
| Events in quadrant B | 18,831,148 | 1,489,866 |
| Events in quadrant C | 37,886,548 | 531,992 |
| Events in quadrant D | 13,911,388 | 1,419,597 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 372 | 0 |
| B | 0 | 372 | 0 |
| C | 0 | 372 | 0 |
| D | 0 | 372 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 48366 | 3 |
| B | 0 | 68433 | 3 |
| C | 0 | 124890 | 3 |
| D | 0 | 54424 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18253 | 771 | 4.223963% |
| B | 18253 | 3120 | 17.093081% |
| C | 18253 | 12638 | 69.237933% |
| D | 18253 | 1344 | 7.363173% |
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 | 19778 | 18255 | 558 | 558 | 2.82% | 3.06% |  |
| B | 19778 | 18253 | 2415 | 2415 | 12.21% | 13.23% |  |
| C | 19777 | 18252 | 12409 | 12409 | 62.74% | 67.99% |  |
| D | 19778 | 18255 | 1312 | 1312 | 6.63% | 7.19% |  |
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 | 15 | 174 | 1649787 | 3548.74 | 1883 | 1838 | 464.4 |
| A | 3 | 63 | 1268690 | 2728.07 | 1883 | 1838 | 464.4 |
| A | 0 | 8 | 417603 | 895.32 | 1883 | 1838 | 464.4 |
| B | 4 | 206 | 7765698 | 21086.39 | 1755 | 1698 | 368.2 |
| B | 10 | 28 | 1080244 | 2929.24 | 1755 | 1698 | 368.2 |
| B | 10 | 254 | 922868 | 2501.82 | 1755 | 1698 | 368.2 |
| C | 7 | 64 | 14324731 | 56656.18 | 917 | 908 | 252.8 |
| C | 1 | 241 | 12240524 | 48412.34 | 917 | 908 | 252.8 |
| C | 15 | 224 | 3249662 | 12850.06 | 917 | 908 | 252.8 |
| D | 12 | 1 | 3064857 | 6024.57 | 1801 | 1723 | 508.4 |
| D | 2 | 153 | 707164 | 1387.46 | 1801 | 1723 | 508.4 |
| D | 3 | 12 | 521644 | 1022.58 | 1801 | 1723 | 508.4 |
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 |  |