Observation information
- date-obs: 2025-07-25
- time-obs: 22:59:38.673300000
- date-end: 2025-07-26
- time-end: 01:31:25.652300000
- obs_id: C09_011T07_9000006488
- exposure: 5485.83370024
- 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_53150cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53150cztM0_level2_quad_clean.evt
|
| Size (bytes) | 550,823,040 | 95,376,960 |
| Size | 525.3 MB
| 91.0 MB
|
| Events in quadrant A | 4,021,635 | 628,473 |
| Events in quadrant B | 3,283,765 | 713,396 |
| Events in quadrant C | 7,113,427 | 528,650 |
| Events in quadrant D | 5,450,609 | 550,961 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 25 | 0 |
| B | 0 | 25 | 0 |
| C | 0 | 25 | 0 |
| D | 0 | 25 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17037 | 2 |
| B | 0 | 14859 | 2 |
| C | 0 | 25740 | 8 |
| D | 0 | 21086 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6697 | 382 | 5.704047% |
| B | 6698 | 84 | 1.254106% |
| C | 6697 | 1268 | 18.933851% |
| D | 6697 | 619 | 9.242945% |
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 | 9107 | 6699 | 330 | 330 | 3.62% | 4.93% |  |
| B | 9108 | 6700 | 31 | 31 | 0.34% | 0.46% |  |
| C | 9107 | 6699 | 1181 | 1181 | 12.97% | 17.63% |  |
| D | 9107 | 6699 | 552 | 552 | 6.06% | 8.24% |  |
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 | 12 | 115 | 857471 | 5115.94 | 673 | 657 | 167.5 |
| A | 15 | 174 | 128599 | 763.93 | 673 | 657 | 167.5 |
| A | 3 | 62 | 121157 | 719.49 | 673 | 657 | 167.5 |
| B | 4 | 81 | 202574 | 1388.32 | 695 | 673 | 145.4 |
| B | 10 | 247 | 63202 | 429.97 | 695 | 673 | 145.4 |
| B | 2 | 249 | 52020 | 353.08 | 695 | 673 | 145.4 |
| C | 1 | 241 | 2792814 | 16355.31 | 617 | 613 | 170.7 |
| C | 15 | 224 | 1090101 | 6381.67 | 617 | 613 | 170.7 |
| C | 13 | 3 | 346789 | 2027.72 | 617 | 613 | 170.7 |
| D | 10 | 172 | 1401581 | 7578.51 | 636 | 608 | 184.9 |
| D | 15 | 125 | 430487 | 2325.41 | 636 | 608 | 184.9 |
| D | 3 | 12 | 301793 | 1629.25 | 636 | 608 | 184.9 |
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 |  |