Observation information
- date-obs: 2025-07-17
- time-obs: 00:19:04.355200000
- date-end: 2025-07-17
- time-end: 02:21:13.336000000
- obs_id: C09_011T07_9000006488
- exposure: 1630.01951116
- 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_53017cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53017cztM0_level2_quad_clean.evt
|
| Size (bytes) | 928,229,760 | 70,208,640 |
| Size | 885.2 MB
| 67.0 MB
|
| Events in quadrant A | 13,513,926 | 152,594 |
| Events in quadrant B | 8,186,290 | 462,106 |
| Events in quadrant C | 7,165,362 | 521,900 |
| Events in quadrant D | 5,004,251 | 546,387 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44375 | 7 |
| B | 0 | 28692 | 1 |
| C | 0 | 25689 | 1 |
| D | 0 | 19399 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6343 | 4897 | 77.203216% |
| B | 6344 | 1982 | 31.242119% |
| C | 6344 | 921 | 14.517654% |
| D | 6344 | 213 | 3.357503% |
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 | 7327 | 6342 | 4569 | 4569 | 62.36% | 72.04% |  |
| B | 7329 | 6345 | 1722 | 1722 | 23.50% | 27.14% |  |
| C | 7329 | 6345 | 873 | 873 | 11.91% | 13.76% |  |
| D | 7329 | 6345 | 177 | 177 | 2.42% | 2.79% |  |
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 | 11201825 | 127346.62 | 340 | 331 | 88.0 |
| A | 3 | 14 | 327685 | 3721.6 | 340 | 331 | 88.0 |
| A | 7 | 206 | 212213 | 2408.83 | 340 | 331 | 88.0 |
| B | 10 | 44 | 3766118 | 32336.83 | 545 | 525 | 116.4 |
| B | 10 | 128 | 1279089 | 10979.6 | 545 | 525 | 116.4 |
| B | 9 | 252 | 455960 | 3911.02 | 545 | 525 | 116.4 |
| C | 15 | 224 | 2449343 | 14809.94 | 596 | 591 | 165.3 |
| C | 7 | 80 | 1082384 | 6542.64 | 596 | 591 | 165.3 |
| C | 1 | 16 | 680869 | 4114.29 | 596 | 591 | 165.3 |
| D | 2 | 62 | 1525530 | 8466.37 | 622 | 593 | 180.1 |
| D | 15 | 78 | 259573 | 1437.84 | 622 | 593 | 180.1 |
| D | 8 | 176 | 148724 | 822.42 | 622 | 593 | 180.1 |
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 |  |