Observation information
- date-obs: 2025-08-09
- time-obs: 17:21:44.810400000
- date-end: 2025-08-09
- time-end: 19:22:11.793900000
- obs_id: C09_011T09_9000006494
- exposure: 3819.19115067
- 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_011T09_9000006494_53369cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53369cztM0_level2_quad_clean.evt
|
| Size (bytes) | 681,739,200 | 83,119,680 |
| Size | 650.2 MB
| 79.3 MB
|
| Events in quadrant A | 3,181,574 | 601,827 |
| Events in quadrant B | 5,462,484 | 608,376 |
| Events in quadrant C | 10,190,488 | 364,883 |
| Events in quadrant D | 5,932,547 | 518,350 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13867 | 1 |
| B | 0 | 20436 | 1 |
| C | 0 | 34476 | 1 |
| D | 0 | 21733 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6057 | 86 | 1.419845% |
| B | 6058 | 575 | 9.491581% |
| C | 6058 | 2537 | 41.878508% |
| D | 6057 | 454 | 7.495460% |
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 | 7227 | 6058 | 42 | 42 | 0.58% | 0.69% |  |
| B | 7228 | 6059 | 388 | 388 | 5.37% | 6.40% |  |
| C | 7228 | 6059 | 2275 | 2275 | 31.47% | 37.55% |  |
| D | 7227 | 6058 | 590 | 590 | 8.16% | 9.74% |  |
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 | 15 | 174 | 222933 | 1389.86 | 642 | 626 | 159.9 |
| A | 12 | 80 | 187969 | 1171.27 | 642 | 626 | 159.9 |
| A | 14 | 239 | 71990 | 446.17 | 642 | 626 | 159.9 |
| B | 10 | 254 | 786701 | 5939.91 | 629 | 608 | 132.3 |
| B | 10 | 28 | 442201 | 3336.78 | 629 | 608 | 132.3 |
| B | 4 | 206 | 390992 | 2949.83 | 629 | 608 | 132.3 |
| C | 15 | 178 | 5161127 | 36881.03 | 514 | 507 | 139.9 |
| C | 15 | 224 | 1470342 | 10504.36 | 514 | 507 | 139.9 |
| C | 15 | 147 | 714634 | 5103.6 | 514 | 507 | 139.9 |
| D | 0 | 18 | 2242105 | 12648.53 | 619 | 592 | 177.2 |
| D | 11 | 245 | 589575 | 3323.55 | 619 | 592 | 177.2 |
| D | 8 | 176 | 193314 | 1087.5 | 619 | 592 | 177.2 |
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 |  |