Observation information
- date-obs: 2025-06-21
- time-obs: 06:39:04.520100000
- date-end: 2025-06-21
- time-end: 13:50:04.463700000
- obs_id: C09_011T06_9000006478
- exposure: 19708.1107917
- 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_011T06_9000006478_52637cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52637cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,530,454,400 | 312,120,000 |
| Size | 2.4 GB
| 297.7 MB
|
| Events in quadrant A | 14,681,403 | 2,169,876 |
| Events in quadrant B | 19,719,491 | 2,257,587 |
| Events in quadrant C | 31,292,332 | 1,577,497 |
| Events in quadrant D | 26,115,646 | 1,779,330 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 60197 | 4 |
| B | 0 | 75402 | 4 |
| C | 0 | 109822 | 5 |
| D | 0 | 94487 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 490 | 0 |
| B | 0 | 490 | 0 |
| C | 0 | 490 | 0 |
| D | 0 | 490 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 24180 | 983 | 4.065343% |
| B | 24180 | 1754 | 7.253929% |
| C | 24179 | 5166 | 21.365648% |
| D | 24180 | 3647 | 15.082713% |
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 | 25860 | 24184 | 541 | 541 | 2.09% | 2.24% |  |
| B | 25860 | 24184 | 962 | 962 | 3.72% | 3.98% |  |
| C | 25859 | 24183 | 4637 | 4637 | 17.93% | 19.17% |  |
| D | 25860 | 24184 | 3081 | 3081 | 11.91% | 12.74% |  |
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 | 8 | 9 | 799013 | 1300.09 | 2482 | 2417 | 612.7 |
| A | 3 | 46 | 625754 | 1017.32 | 2482 | 2417 | 612.7 |
| A | 14 | 235 | 624243 | 1014.85 | 2482 | 2417 | 612.7 |
| B | 10 | 128 | 4165850 | 8148.19 | 2421 | 2341 | 511.0 |
| B | 5 | 185 | 1391540 | 2718.73 | 2421 | 2341 | 511.0 |
| B | 10 | 254 | 1388934 | 2713.63 | 2421 | 2341 | 511.0 |
| C | 15 | 248 | 17354767 | 28038.41 | 2238 | 2214 | 618.9 |
| C | 15 | 144 | 1761867 | 2843.26 | 2238 | 2214 | 618.9 |
| C | 15 | 157 | 780472 | 1257.52 | 2238 | 2214 | 618.9 |
| D | 8 | 176 | 6460938 | 9829.95 | 2302 | 2197 | 657.0 |
| D | 6 | 42 | 2733562 | 4157.03 | 2302 | 2197 | 657.0 |
| D | 11 | 245 | 1052875 | 1599.09 | 2302 | 2197 | 657.0 |
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 |  |