Observation information
- date-obs: 2025-08-02
- time-obs: 23:38:27.145800000
- date-end: 2025-08-03
- time-end: 02:06:00.125700000
- obs_id: C09_011T08_9000006492
- exposure: 5115.04740453
- 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_53269cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53269cztM0_level2_quad_clean.evt
|
| Size (bytes) | 659,937,600 | 94,276,800 |
| Size | 629.4 MB
| 89.9 MB
|
| Events in quadrant A | 4,602,486 | 644,826 |
| Events in quadrant B | 5,460,274 | 663,910 |
| Events in quadrant C | 9,894,638 | 471,589 |
| Events in quadrant D | 3,938,081 | 594,656 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18509 | 2 |
| B | 0 | 21097 | 2 |
| C | 0 | 34171 | 2 |
| D | 0 | 16904 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6881 | 240 | 3.487865% |
| B | 6881 | 579 | 8.414475% |
| C | 6881 | 2099 | 30.504287% |
| D | 6881 | 133 | 1.932859% |
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 | 7901 | 6882 | 225 | 225 | 2.85% | 3.27% |  |
| B | 7901 | 6882 | 320 | 320 | 4.05% | 4.65% |  |
| C | 7901 | 6881 | 1917 | 1917 | 24.26% | 27.86% |  |
| D | 7901 | 6882 | 126 | 126 | 1.59% | 1.83% |  |
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 | 3 | 27 | 792352 | 4580.1 | 695 | 678 | 172.9 |
| A | 3 | 62 | 546551 | 3158.06 | 695 | 678 | 172.9 |
| A | 12 | 80 | 143515 | 826.36 | 695 | 678 | 172.9 |
| B | 10 | 254 | 1272249 | 8651.6 | 688 | 664 | 147.0 |
| B | 4 | 171 | 492919 | 3349.2 | 688 | 664 | 147.0 |
| B | 2 | 249 | 360436 | 2447.81 | 688 | 664 | 147.0 |
| C | 10 | 22 | 1801481 | 10865.53 | 602 | 596 | 165.7 |
| C | 15 | 224 | 1479352 | 8921.99 | 602 | 596 | 165.7 |
| C | 13 | 3 | 1454072 | 8769.46 | 602 | 596 | 165.7 |
| D | 2 | 249 | 276165 | 1418.05 | 678 | 647 | 194.3 |
| D | 12 | 3 | 248266 | 1274.45 | 678 | 647 | 194.3 |
| D | 6 | 42 | 163950 | 840.49 | 678 | 647 | 194.3 |
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 |  |