Observation information
- date-obs: 2025-06-20
- time-obs: 04:36:53.729500000
- date-end: 2025-06-20
- time-end: 06:34:16.715500000
- obs_id: C09_011T06_9000006478
- exposure: 19.3468402028
- 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_52618cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52618cztM0_level2_quad_clean.evt
|
| Size (bytes) | 964,126,080 | 75,695,040 |
| Size | 919.5 MB
| 72.2 MB
|
| Events in quadrant A | 3,506,994 | 641,781 |
| Events in quadrant B | 6,659,182 | 671,084 |
| Events in quadrant C | 16,610,347 | 1,630 |
| Events in quadrant D | 8,366,721 | 486,397 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15738 | 0 |
| B | 0 | 24668 | 0 |
| C | 0 | 54066 | 0 |
| D | 0 | 29815 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7043 | 85 | 1.206872% |
| B | 7043 | 331 | 4.699702% |
| C | 7043 | 7030 | 99.815420% |
| D | 7044 | 1282 | 18.199886% |
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 | 7043 | 7043 | 76 | 76 | 1.08% | 1.08% |  |
| B | 7043 | 7043 | 186 | 186 | 2.64% | 2.64% |  |
| C | 7042 | 7042 | 5484 | 5484 | 77.88% | 77.88% |  |
| D | 7044 | 7044 | 1130 | 1130 | 16.04% | 16.04% |  |
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 | 46 | 335439 | 1857.39 | 713 | 694 | 180.2 |
| A | 7 | 190 | 85913 | 472.85 | 713 | 694 | 180.2 |
| A | 12 | 3 | 64124 | 351.95 | 713 | 694 | 180.2 |
| B | 10 | 254 | 2840348 | 18959.07 | 699 | 676 | 149.8 |
| B | 8 | 234 | 256053 | 1705.02 | 699 | 676 | 149.8 |
| B | 10 | 247 | 192353 | 1279.73 | 699 | 676 | 149.8 |
| C | 15 | 248 | 16223570 | 730094.87 | 74 | 73 | 22.2 |
| C | 12 | 254 | 53857 | 2420.4 | 74 | 73 | 22.2 |
| C | 14 | 254 | 6612 | 294.27 | 74 | 73 | 22.2 |
| D | 2 | 62 | 1676509 | 9369.55 | 627 | 598 | 178.9 |
| D | 8 | 176 | 1087151 | 6074.62 | 627 | 598 | 178.9 |
| D | 2 | 37 | 1056520 | 5903.37 | 627 | 598 | 178.9 |
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 |  |