Observation information
- date-obs: 2021-08-30
- time-obs: 14:52:53.526600000
- date-end: 2021-08-30
- time-end: 17:09:01.057700000
- obs_id: A10_109T01_9000004678
- exposure: 5374.56311259
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_109T01_9000004678_32024cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004678_32024cztM0_level2_quad_clean.evt
|
| Size (bytes) | 820,391,040 | 120,625,920 |
| Size | 782.4 MB
| 115.0 MB
|
| Events in quadrant A | 4,023,937 | 832,674 |
| Events in quadrant B | 9,767,486 | 768,508 |
| Events in quadrant C | 4,516,362 | 781,186 |
| Events in quadrant D | 6,006,714 | 723,868 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16805 | 2 |
| B | 0 | 34572 | 2 |
| C | 0 | 18179 | 2 |
| D | 0 | 23321 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7869 | 240 | 3.049943% |
| B | 7869 | 2255 | 28.656754% |
| C | 7869 | 409 | 5.197611% |
| D | 7869 | 774 | 9.836066% |
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 | 8169 | 7869 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8169 | 7869 | 1602 | 1602 | 19.61% | 20.36% |  |
| C | 8169 | 7869 | 46 | 46 | 0.56% | 0.58% |  |
| D | 8169 | 7870 | 517 | 517 | 6.33% | 6.57% |  |
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 | 13 | 6 | 19451 | 87.63 | 1038 | 1017 | 210.4 |
| A | 13 | 254 | 14861 | 65.81 | 1038 | 1017 | 210.4 |
| A | 3 | 137 | 10510 | 45.13 | 1038 | 1017 | 210.4 |
| B | 10 | 245 | 3288479 | 18831.61 | 900 | 879 | 174.6 |
| B | 6 | 159 | 1832097 | 10489.35 | 900 | 879 | 174.6 |
| B | 12 | 18 | 861066 | 4927.21 | 900 | 879 | 174.6 |
| C | 0 | 10 | 248408 | 1064.35 | 980 | 989 | 232.5 |
| C | 3 | 233 | 211842 | 907.05 | 980 | 989 | 232.5 |
| C | 14 | 238 | 156664 | 669.69 | 980 | 989 | 232.5 |
| D | 13 | 249 | 1391591 | 5975.4 | 971 | 946 | 232.7 |
| D | 8 | 195 | 638826 | 2740.88 | 971 | 946 | 232.7 |
| D | 2 | 250 | 210435 | 900.14 | 971 | 946 | 232.7 |
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 |  |