Observation information
- date-obs: 2025-07-10
- time-obs: 08:35:30.791900000
- date-end: 2025-07-10
- time-end: 10:39:42.776500000
- obs_id: C09_011T06_9000006484
- exposure: 683.547131956
- 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_9000006484_52918cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006484_52918cztM0_level2_quad_clean.evt
|
| Size (bytes) | 896,241,600 | 73,232,640 |
| Size | 854.7 MB
| 69.8 MB
|
| Events in quadrant A | 15,410,448 | 70,834 |
| Events in quadrant B | 3,696,518 | 659,721 |
| Events in quadrant C | 5,235,411 | 554,013 |
| Events in quadrant D | 8,344,273 | 491,254 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50148 | 1 |
| B | 0 | 15436 | 1 |
| C | 0 | 19967 | 4 |
| D | 0 | 29267 | 5 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 2 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6327 | 5727 | 90.516833% |
| B | 6327 | 235 | 3.714241% |
| C | 6327 | 600 | 9.483167% |
| D | 6327 | 1148 | 18.144460% |
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 | 7452 | 6328 | 5236 | 5236 | 70.26% | 82.74% |  |
| B | 7452 | 6328 | 49 | 49 | 0.66% | 0.77% |  |
| C | 7453 | 6329 | 545 | 545 | 7.31% | 8.61% |  |
| D | 7453 | 6329 | 1027 | 1027 | 13.78% | 16.23% |  |
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 | 13764529 | 179636.16 | 305 | 298 | 76.6 |
| A | 15 | 174 | 143381 | 1867.37 | 305 | 298 | 76.6 |
| A | 0 | 8 | 79270 | 1030.66 | 305 | 298 | 76.6 |
| B | 10 | 254 | 257636 | 1826.25 | 667 | 645 | 140.7 |
| B | 7 | 0 | 186714 | 1322.26 | 667 | 645 | 140.7 |
| B | 5 | 172 | 147059 | 1040.46 | 667 | 645 | 140.7 |
| C | 7 | 80 | 1525432 | 8764.96 | 637 | 630 | 174.0 |
| C | 13 | 3 | 593773 | 3409.54 | 637 | 630 | 174.0 |
| C | 2 | 239 | 84345 | 481.22 | 637 | 630 | 174.0 |
| D | 15 | 78 | 2253524 | 12622.17 | 622 | 593 | 178.5 |
| D | 8 | 176 | 1581599 | 8857.67 | 622 | 593 | 178.5 |
| D | 3 | 224 | 551150 | 3084.53 | 622 | 593 | 178.5 |
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 |  |