Observation information
- date-obs: 2025-05-01
- time-obs: 03:46:23.883600000
- date-end: 2025-05-01
- time-end: 05:43:47.867300000
- obs_id: C09_011T05_9000006466
- exposure: 4858.97350395
- 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_9000006466_51875cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006466_51875cztM0_level2_quad_clean.evt
|
Size (bytes) | 686,606,400 | 82,932,480 |
Size | 654.8 MB
| 79.1 MB
|
Events in quadrant A | 6,458,456 | 562,240 |
Events in quadrant B | 7,187,656 | 524,778 |
Events in quadrant C | 2,984,713 | 574,256 |
Events in quadrant D | 8,295,230 | 407,301 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 130 | 0 |
B | 0 | 130 | 0 |
C | 0 | 130 | 0 |
D | 0 | 130 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 23655 | 1 |
B | 0 | 25651 | 1 |
C | 0 | 13744 | 1 |
D | 0 | 29115 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 7 | 0 |
B | 0 | 7 | 0 |
C | 0 | 7 | 0 |
D | 0 | 7 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6329 | 371 | 5.861906% |
B | 6330 | 1458 | 23.033175% |
C | 6330 | 46 | 0.726698% |
D | 6330 | 1706 | 26.951027% |
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 | 7044 | 6326 | 213 | 213 | 3.02% | 3.37% |  |
B | 7045 | 6327 | 1139 | 1139 | 16.17% | 18.00% |  |
C | 7045 | 6327 | 18 | 18 | 0.26% | 0.28% |  |
D | 7045 | 6327 | 1605 | 1605 | 22.78% | 25.37% |  |
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 | 3 | 2284688 | 14262.07 | 646 | 630 | 160.1 |
A | 4 | 175 | 589183 | 3675.03 | 646 | 630 | 160.1 |
A | 4 | 253 | 266173 | 1658.1 | 646 | 630 | 160.1 |
B | 4 | 170 | 3629998 | 28370.28 | 600 | 580 | 127.9 |
B | 1 | 255 | 263848 | 2057.9 | 600 | 580 | 127.9 |
B | 8 | 176 | 248657 | 1939.16 | 600 | 580 | 127.9 |
C | 13 | 3 | 86282 | 489.14 | 635 | 629 | 175.1 |
C | 15 | 231 | 75441 | 427.23 | 635 | 629 | 175.1 |
C | 15 | 224 | 51813 | 292.3 | 635 | 629 | 175.1 |
D | 11 | 129 | 4565420 | 29310.29 | 555 | 535 | 155.7 |
D | 8 | 176 | 530291 | 3401.47 | 555 | 535 | 155.7 |
D | 3 | 12 | 350274 | 2245.61 | 555 | 535 | 155.7 |
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 |  |