Observation information
- date-obs: 2025-06-19
- time-obs: 10:43:34.873800000
- date-end: 2025-06-19
- time-end: 14:58:41.840800000
- obs_id: C09_011T06_9000006478
- exposure: 7189.81859213
- 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_52608cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52608cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,900,584,000 | 154,160,640 |
| Size | 1.8 GB
| 147.0 MB
|
| Events in quadrant A | 7,269,884 | 1,234,758 |
| Events in quadrant B | 17,939,238 | 1,048,682 |
| Events in quadrant C | 18,535,208 | 861,498 |
| Events in quadrant D | 25,561,731 | 580,212 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 31040 | 4 |
| B | 0 | 62837 | 4 |
| C | 0 | 64473 | 9 |
| D | 0 | 85312 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 280 | 0 |
| B | 0 | 280 | 0 |
| C | 0 | 280 | 0 |
| D | 0 | 280 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 13617 | 344 | 2.526254% |
| B | 13618 | 3400 | 24.966956% |
| C | 13617 | 4144 | 30.432548% |
| D | 13617 | 7181 | 52.735551% |
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 | 15306 | 13620 | 137 | 137 | 0.90% | 1.01% |  |
| B | 15307 | 13621 | 2577 | 2577 | 16.84% | 18.92% |  |
| C | 15307 | 13621 | 3695 | 3695 | 24.14% | 27.13% |  |
| D | 15307 | 13621 | 6687 | 6687 | 43.69% | 49.09% |  |
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 | 249 | 407206 | 1126.51 | 1440 | 1401 | 360.2 |
| A | 5 | 243 | 226062 | 623.66 | 1440 | 1401 | 360.2 |
| A | 3 | 14 | 199928 | 551.11 | 1440 | 1401 | 360.2 |
| B | 10 | 254 | 5078191 | 18344.87 | 1310 | 1264 | 276.7 |
| B | 10 | 128 | 4385596 | 15842.26 | 1310 | 1264 | 276.7 |
| B | 10 | 247 | 702374 | 2533.38 | 1310 | 1264 | 276.7 |
| C | 15 | 248 | 10332070 | 31992.79 | 1171 | 1155 | 322.9 |
| C | 2 | 12 | 1382216 | 4276.87 | 1171 | 1155 | 322.9 |
| C | 4 | 5 | 805372 | 2490.5 | 1171 | 1155 | 322.9 |
| D | 2 | 62 | 12508404 | 40026.58 | 1081 | 1028 | 312.5 |
| D | 8 | 176 | 4619853 | 14781.34 | 1081 | 1028 | 312.5 |
| D | 6 | 42 | 615209 | 1965.53 | 1081 | 1028 | 312.5 |
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 |  |