Observation information
- date-obs: 2021-08-14
- time-obs: 01:59:55.820000000
- date-end: 2021-08-14
- time-end: 07:33:19.820900000
- obs_id: A10_109T01_9000004638
- exposure: 10101.9666294
- 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_9000004638_31781cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004638_31781cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,516,242,240 | 233,403,840 |
| Size | 1.4 GB
| 222.6 MB
|
| Events in quadrant A | 9,908,847 | 1,482,799 |
| Events in quadrant B | 14,393,762 | 1,481,641 |
| Events in quadrant C | 9,197,663 | 1,443,529 |
| Events in quadrant D | 11,186,837 | 1,400,565 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40637 | 5 |
| B | 0 | 56742 | 3 |
| C | 0 | 38442 | 3 |
| D | 0 | 45396 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 372 | 0 |
| B | 0 | 372 | 0 |
| C | 0 | 372 | 0 |
| D | 0 | 372 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18288 | 408 | 2.230971% |
| B | 18289 | 437 | 2.389414% |
| C | 18289 | 283 | 1.547378% |
| D | 18289 | 226 | 1.235715% |
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 | 20003 | 18291 | 147 | 147 | 0.73% | 0.80% |  |
| B | 20004 | 18291 | 113 | 113 | 0.56% | 0.62% |  |
| C | 20004 | 18292 | 8 | 8 | 0.04% | 0.04% |  |
| D | 20004 | 18292 | 73 | 73 | 0.36% | 0.40% |  |
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 | 0 | 13 | 1211400 | 2683.71 | 2249 | 2209 | 450.6 |
| A | 13 | 254 | 33817 | 70.15 | 2249 | 2209 | 450.6 |
| A | 3 | 137 | 23246 | 46.69 | 2249 | 2209 | 450.6 |
| B | 6 | 159 | 4794854 | 11206.92 | 2222 | 2161 | 427.7 |
| B | 0 | 229 | 583700 | 1359.83 | 2222 | 2161 | 427.7 |
| B | 4 | 80 | 132978 | 305.89 | 2222 | 2161 | 427.7 |
| C | 14 | 238 | 351837 | 687.04 | 2176 | 2200 | 508.9 |
| C | 0 | 10 | 211043 | 410.38 | 2176 | 2200 | 508.9 |
| C | 3 | 233 | 67139 | 127.61 | 2176 | 2200 | 508.9 |
| D | 8 | 195 | 2161987 | 4192.67 | 2183 | 2134 | 515.2 |
| D | 12 | 218 | 328005 | 632.57 | 2183 | 2134 | 515.2 |
| D | 2 | 250 | 211959 | 407.31 | 2183 | 2134 | 515.2 |
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 |  |