Observation information
- date-obs: 2025-05-18
- time-obs: 06:58:48.477100000
- date-end: 2025-05-18
- time-end: 09:03:19.459400000
- obs_id: C09_011T07_9000006470
- exposure: 2093.34548175
- 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_9000006470_52129cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52129cztM0_level2_quad_clean.evt
|
| Size (bytes) | 868,400,640 | 78,969,600 |
| Size | 828.2 MB
| 75.3 MB
|
| Events in quadrant A | 3,508,181 | 623,764 |
| Events in quadrant B | 4,477,258 | 631,641 |
| Events in quadrant C | 8,448,855 | 498,589 |
| Events in quadrant D | 15,193,159 | 170,535 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14923 | 1 |
| B | 0 | 17845 | 4 |
| C | 0 | 29741 | 6 |
| D | 0 | 49720 | 8 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6691 | 91 | 1.360036% |
| B | 6690 | 433 | 6.472347% |
| C | 6691 | 1491 | 22.283665% |
| D | 6691 | 4983 | 74.473173% |
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 | 7471 | 6692 | 28 | 28 | 0.37% | 0.42% |  |
| B | 7472 | 6692 | 281 | 281 | 3.76% | 4.20% |  |
| C | 7472 | 6693 | 1197 | 1197 | 16.02% | 17.88% |  |
| D | 7472 | 6691 | 4691 | 4691 | 62.78% | 70.11% |  |
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 | 4 | 3 | 154722 | 884.91 | 705 | 687 | 174.1 |
| A | 5 | 240 | 129116 | 737.8 | 705 | 687 | 174.1 |
| A | 7 | 206 | 70005 | 398.22 | 705 | 687 | 174.1 |
| B | 5 | 172 | 721099 | 4969.97 | 678 | 654 | 145.0 |
| B | 5 | 185 | 327994 | 2258.14 | 678 | 654 | 145.0 |
| B | 12 | 32 | 227800 | 1566.96 | 678 | 654 | 145.0 |
| C | 15 | 224 | 3773267 | 22067.42 | 621 | 617 | 171.0 |
| C | 4 | 5 | 540702 | 3159.13 | 621 | 617 | 171.0 |
| C | 0 | 161 | 496690 | 2901.69 | 621 | 617 | 171.0 |
| D | 6 | 42 | 6132920 | 49302.31 | 432 | 412 | 124.4 |
| D | 15 | 94 | 5903905 | 47461.15 | 432 | 412 | 124.4 |
| D | 5 | 206 | 296515 | 2380.52 | 432 | 412 | 124.4 |
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 |  |