Observation information
- date-obs: 2021-08-16
- time-obs: 06:00:47.856000000
- date-end: 2021-08-21
- time-end: 00:54:59.956200000
- obs_id: A10_109T01_9000004646
- exposure: 228002.233479
- 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_9000004646cztM0_level2_bc.evt
| modeM0/AS1A10_109T01_9000004646cztM0_level2_quad_clean.evt
|
| Size (bytes) | 17,185,383,360 | 5,334,880,320 |
| Size | 16.0 GB
| 5.0 GB
|
| Events in quadrant A | 90,198,472 | 35,546,871 |
| Events in quadrant B | 181,133,002 | 35,167,054 |
| Events in quadrant C | 104,991,593 | 33,647,620 |
| Events in quadrant D | 120,237,432 | 33,118,310 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7174 | 0 |
| B | 0 | 7172 | 0 |
| C | 0 | 7170 | 0 |
| D | 0 | 7174 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 791117 | 0 |
| B | 0 | 1101067 | 0 |
| C | 0 | 863695 | 0 |
| D | 0 | 873764 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 577 | 0 |
| B | 0 | 577 | 0 |
| C | 0 | 577 | 0 |
| D | 0 | 577 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 352285 | 8428 | 2.392381% |
| B | 352194 | 10420 | 2.958597% |
| C | 352280 | 15176 | 4.307937% |
| D | 352218 | 7082 | 2.010687% |
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 | 413097 | 352407 | 323 | 323 | 0.08% | 0.09% |  |
| B | 413097 | 352327 | 170 | 170 | 0.04% | 0.05% |  |
| C | 413097 | 352414 | 197 | 197 | 0.05% | 0.06% |  |
| D | 413097 | 352344 | 468 | 468 | 0.11% | 0.13% |  |
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 | 9254264 | 2036.76 | 20878 | 20573 | 4533.5 |
| A | 13 | 254 | 585962 | 124.71 | 20878 | 20573 | 4533.5 |
| A | 13 | 6 | 436413 | 91.73 | 20878 | 20573 | 4533.5 |
| B | 6 | 159 | 89606737 | 22809.16 | 20774 | 20460 | 3927.6 |
| B | 10 | 245 | 5206762 | 1320.46 | 20774 | 20460 | 3927.6 |
| B | 4 | 80 | 3627832 | 918.46 | 20774 | 20460 | 3927.6 |
| C | 0 | 10 | 13572940 | 2888.32 | 19767 | 19837 | 4692.4 |
| C | 3 | 233 | 11670284 | 2482.85 | 19767 | 19837 | 4692.4 |
| C | 10 | 22 | 1542698 | 324.54 | 19767 | 19837 | 4692.4 |
| D | 8 | 195 | 26628007 | 5730.74 | 20379 | 19876 | 4643.1 |
| D | 12 | 218 | 4941471 | 1059.99 | 20379 | 19876 | 4643.1 |
| D | 12 | 233 | 3453538 | 739.53 | 20379 | 19876 | 4643.1 |
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 |  |