Observation information
- date-obs: 2025-06-17
- time-obs: 08:50:56.258200000
- date-end: 2025-06-17
- time-end: 13:31:34.223400000
- obs_id: C09_011T06_9000006478
- exposure: 12147.4765996
- 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_52578cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52578cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,774,670,400 | 211,619,520 |
| Size | 1.7 GB
| 201.8 MB
|
| Events in quadrant A | 9,364,772 | 1,476,463 |
| Events in quadrant B | 12,867,750 | 1,567,758 |
| Events in quadrant C | 16,402,357 | 1,272,365 |
| Events in quadrant D | 25,791,633 | 955,397 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 39755 | 1 |
| B | 0 | 49824 | 1 |
| C | 0 | 60277 | 1 |
| D | 0 | 88107 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 330 | 0 |
| B | 0 | 330 | 0 |
| C | 0 | 330 | 0 |
| D | 0 | 330 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 16443 | 407 | 2.475217% |
| B | 16443 | 682 | 4.147662% |
| C | 16444 | 2036 | 12.381416% |
| D | 16444 | 5153 | 31.336658% |
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 | 16838 | 16444 | 294 | 294 | 1.75% | 1.79% |  |
| B | 16838 | 16444 | 369 | 369 | 2.19% | 2.24% |  |
| C | 16839 | 16445 | 1959 | 1959 | 11.63% | 11.91% |  |
| D | 16839 | 16445 | 5055 | 5055 | 30.02% | 30.74% |  |
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 | 5 | 243 | 651482 | 1541.28 | 1698 | 1652 | 421.6 |
| A | 4 | 249 | 480258 | 1135.17 | 1698 | 1652 | 421.6 |
| A | 4 | 61 | 295856 | 697.8 | 1698 | 1652 | 421.6 |
| B | 10 | 254 | 2186737 | 6171.69 | 1668 | 1610 | 354.1 |
| B | 7 | 0 | 1426486 | 4024.43 | 1668 | 1610 | 354.1 |
| B | 4 | 171 | 545451 | 1536.03 | 1668 | 1610 | 354.1 |
| C | 15 | 248 | 6112032 | 14041.84 | 1579 | 1566 | 435.2 |
| C | 12 | 249 | 1567455 | 3598.41 | 1579 | 1566 | 435.2 |
| C | 15 | 147 | 584936 | 1340.58 | 1579 | 1566 | 435.2 |
| D | 15 | 125 | 4947685 | 11792.85 | 1469 | 1404 | 419.4 |
| D | 7 | 126 | 4329052 | 10317.92 | 1469 | 1404 | 419.4 |
| D | 6 | 42 | 2886579 | 6878.79 | 1469 | 1404 | 419.4 |
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 |  |