Observation information
- date-obs: 2025-05-20
- time-obs: 02:34:29.125600000
- date-end: 2025-05-20
- time-end: 06:11:12.093100000
- obs_id: C09_011T08_9000006472
- exposure: 130.430725634
- 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_9000006472_52157cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52157cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,498,239,360 | 129,288,960 |
| Size | 1.4 GB
| 123.3 MB
|
| Events in quadrant A | 9,772,946 | 1,067,385 |
| Events in quadrant B | 8,210,699 | 1,134,162 |
| Events in quadrant C | 13,594,595 | 868,296 |
| Events in quadrant D | 22,947,314 | 10,227 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 37713 | 2 |
| B | 0 | 32842 | 2 |
| C | 0 | 48888 | 2 |
| D | 0 | 76518 | 5 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 246 | 0 |
| B | 0 | 246 | 0 |
| C | 0 | 246 | 0 |
| D | 0 | 246 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 12050 | 432 | 3.585062% |
| B | 12050 | 670 | 5.560166% |
| C | 12050 | 2623 | 21.767635% |
| D | 12049 | 11948 | 99.161756% |
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 | 13005 | 12051 | 283 | 283 | 2.18% | 2.35% |  |
| B | 13005 | 12051 | 404 | 404 | 3.11% | 3.35% |  |
| C | 13005 | 12052 | 2176 | 2176 | 16.73% | 18.06% |  |
| D | 13003 | 12048 | 6597 | 6597 | 50.73% | 54.76% |  |
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 | 2432995 | 7837.12 | 1246 | 1216 | 310.3 |
| A | 3 | 231 | 338961 | 1088.48 | 1246 | 1216 | 310.3 |
| A | 11 | 3 | 309853 | 994.67 | 1246 | 1216 | 310.3 |
| B | 5 | 172 | 1243185 | 4814.11 | 1224 | 1183 | 258.0 |
| B | 10 | 254 | 305493 | 1179.53 | 1224 | 1183 | 258.0 |
| B | 5 | 185 | 261617 | 1009.47 | 1224 | 1183 | 258.0 |
| C | 15 | 224 | 6298802 | 20166.07 | 1122 | 1114 | 312.3 |
| C | 10 | 22 | 634842 | 2029.28 | 1122 | 1114 | 312.3 |
| C | 15 | 252 | 331345 | 1057.44 | 1122 | 1114 | 312.3 |
| D | 12 | 1 | 12542204 | 243385.7 | 158 | 149 | 51.5 |
| D | 6 | 42 | 8192741 | 158981.9 | 158 | 149 | 51.5 |
| D | 12 | 17 | 843994 | 16375.29 | 158 | 149 | 51.5 |
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 |  |