Observation information
- date-obs: 2025-05-28
- time-obs: 11:39:58.476900000
- date-end: 2025-05-28
- time-end: 13:45:38.460500000
- obs_id: C09_011T05_9000006474
- exposure: 837.380690753
- 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_011T05_9000006474_52281cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006474_52281cztM0_level2_quad_clean.evt
|
| Size (bytes) | 743,993,280 | 75,513,600 |
| Size | 709.5 MB
| 72.0 MB
|
| Events in quadrant A | 4,063,680 | 590,843 |
| Events in quadrant B | 4,805,043 | 632,164 |
| Events in quadrant C | 12,614,703 | 79,642 |
| Events in quadrant D | 5,545,928 | 525,080 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16666 | 1 |
| B | 0 | 18759 | 1 |
| C | 0 | 41988 | 1 |
| D | 0 | 20983 | 1 |
| 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 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6565 | 400 | 6.092917% |
| B | 6565 | 423 | 6.443260% |
| C | 6566 | 5828 | 88.760280% |
| D | 6566 | 464 | 7.066707% |
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 | 7540 | 6566 | 228 | 228 | 3.02% | 3.47% |  |
| B | 7540 | 6566 | 294 | 294 | 3.90% | 4.48% |  |
| C | 7540 | 6565 | 3166 | 3166 | 41.99% | 48.23% |  |
| D | 7541 | 6567 | 339 | 339 | 4.50% | 5.16% |  |
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 | 6 | 162 | 452540 | 2699.69 | 669 | 650 | 167.4 |
| A | 4 | 249 | 329283 | 1963.32 | 669 | 650 | 167.4 |
| A | 13 | 248 | 113905 | 676.61 | 669 | 650 | 167.4 |
| B | 4 | 171 | 596598 | 4254.68 | 659 | 636 | 140.1 |
| B | 10 | 247 | 296211 | 2110.16 | 659 | 636 | 140.1 |
| B | 0 | 213 | 248394 | 1768.79 | 659 | 636 | 140.1 |
| C | 15 | 158 | 4542644 | 66783.95 | 238 | 235 | 68.0 |
| C | 0 | 161 | 4208918 | 61877.4 | 238 | 235 | 68.0 |
| C | 15 | 178 | 1085778 | 15960.0 | 238 | 235 | 68.0 |
| D | 15 | 93 | 1570093 | 8475.1 | 648 | 618 | 185.2 |
| D | 12 | 18 | 508027 | 2739.99 | 648 | 618 | 185.2 |
| D | 7 | 60 | 242282 | 1304.98 | 648 | 618 | 185.2 |
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 |  |