Observation information
- date-obs: 2025-07-16
- time-obs: 12:15:14.457300000
- date-end: 2025-07-16
- time-end: 14:14:35.440300000
- obs_id: C09_011T07_9000006488
- exposure: 76.1319906712
- 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_9000006488_53009cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53009cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,243,869,120 | 60,408,000 |
| Size | 1.2 GB
| 57.6 MB
|
| Events in quadrant A | 17,326,104 | 7,921 |
| Events in quadrant B | 3,687,221 | 691,896 |
| Events in quadrant C | 9,604,143 | 471,438 |
| Events in quadrant D | 14,891,380 | 173,935 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56115 | 6 |
| B | 0 | 15864 | 1 |
| C | 0 | 33416 | 1 |
| D | 0 | 48969 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6940 | 6885 | 99.207493% |
| B | 6940 | 147 | 2.118156% |
| C | 6941 | 2042 | 29.419392% |
| D | 6941 | 5224 | 75.262930% |
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 | 7159 | 6939 | 6497 | 6497 | 90.75% | 93.63% |  |
| B | 7160 | 6942 | 52 | 52 | 0.73% | 0.75% |  |
| C | 7160 | 6942 | 1577 | 1577 | 22.03% | 22.72% |  |
| D | 7160 | 6942 | 4459 | 4459 | 62.28% | 64.23% |  |
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 | 9 | 191 | 15232556 | 263377.52 | 219 | 214 | 57.8 |
| A | 15 | 190 | 781309 | 13505.66 | 219 | 214 | 57.8 |
| A | 7 | 206 | 312237 | 5395.09 | 219 | 214 | 57.8 |
| B | 10 | 254 | 148640 | 962.37 | 714 | 688 | 153.7 |
| B | 5 | 185 | 105558 | 682.14 | 714 | 688 | 153.7 |
| B | 4 | 81 | 90669 | 585.29 | 714 | 688 | 153.7 |
| C | 15 | 224 | 3478860 | 20133.83 | 626 | 620 | 172.8 |
| C | 9 | 38 | 1246117 | 7209.57 | 626 | 620 | 172.8 |
| C | 12 | 254 | 684803 | 3960.4 | 626 | 620 | 172.8 |
| D | 2 | 62 | 5120186 | 41387.22 | 415 | 395 | 123.7 |
| D | 8 | 176 | 3301628 | 26686.41 | 415 | 395 | 123.7 |
| D | 12 | 17 | 3234160 | 26141.01 | 415 | 395 | 123.7 |
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 |  |