Observation information
- date-obs: 2025-05-18
- time-obs: 22:20:00.349700000
- date-end: 2025-05-19
- time-end: 00:38:56.331900000
- obs_id: C09_011T07_9000006470
- exposure: 757.600598574
- 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_9000006470_52139cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52139cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,143,048,960 | 94,662,720 |
| Size | 1.1 GB
| 90.3 MB
|
| Events in quadrant A | 5,221,488 | 771,875 |
| Events in quadrant B | 6,231,363 | 811,480 |
| Events in quadrant C | 10,227,493 | 638,204 |
| Events in quadrant D | 19,986,816 | 64,599 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 168 | 0 |
| B | 0 | 168 | 0 |
| C | 0 | 168 | 0 |
| D | 0 | 168 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21371 | 0 |
| B | 0 | 24469 | 5 |
| C | 0 | 36304 | 14 |
| D | 0 | 65012 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8336 | 234 | 2.807102% |
| B | 8336 | 471 | 5.650192% |
| C | 8334 | 1817 | 21.802256% |
| D | 8337 | 7752 | 92.983087% |
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 | 8336 | 8336 | 175 | 175 | 2.10% | 2.10% |  |
| B | 8337 | 8337 | 272 | 272 | 3.26% | 3.26% |  |
| C | 8337 | 8336 | 1471 | 1471 | 17.64% | 17.65% |  |
| D | 8337 | 8337 | 7281 | 7281 | 87.33% | 87.33% |  |
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 | 11 | 3 | 771953 | 3478.34 | 886 | 862 | 221.7 |
| A | 14 | 254 | 202036 | 907.48 | 886 | 862 | 221.7 |
| A | 4 | 3 | 126713 | 567.71 | 886 | 862 | 221.7 |
| B | 5 | 172 | 860676 | 4578.74 | 877 | 843 | 187.8 |
| B | 4 | 81 | 661150 | 3516.23 | 877 | 843 | 187.8 |
| B | 7 | 252 | 290126 | 1540.47 | 877 | 843 | 187.8 |
| C | 15 | 224 | 4275654 | 18857.52 | 813 | 804 | 226.7 |
| C | 4 | 5 | 938501 | 4136.44 | 813 | 804 | 226.7 |
| C | 15 | 193 | 513766 | 2262.81 | 813 | 804 | 226.7 |
| D | 6 | 42 | 13296288 | 112306.43 | 407 | 387 | 118.4 |
| D | 15 | 94 | 1195267 | 10092.79 | 407 | 387 | 118.4 |
| D | 12 | 3 | 1195237 | 10092.53 | 407 | 387 | 118.4 |
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 |  |