Observation information
- date-obs: 2021-08-13
- time-obs: 09:32:20.807200000
- date-end: 2021-08-14
- time-end: 12:54:59.822200000
- obs_id: A10_109T01_9000004638
- exposure: 55187.7047898
- 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_9000004638cztM0_level2_bc.evt
| modeM0/AS1A10_109T01_9000004638cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,116,827,520 | 1,315,969,920 |
Size | 3.8 GB
| 1.2 GB
|
Events in quadrant A | 22,685,591 | 8,759,908 |
Events in quadrant B | 42,234,456 | 8,727,921 |
Events in quadrant C | 23,059,984 | 8,421,011 |
Events in quadrant D | 30,989,617 | 8,190,898 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 191239 | 0 |
B | 0 | 258768 | 0 |
C | 0 | 197259 | 0 |
D | 0 | 216100 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 146 | 0 |
B | 0 | 146 | 0 |
C | 0 | 146 | 0 |
D | 0 | 146 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1714 | 0 |
B | 0 | 1714 | 0 |
C | 0 | 1714 | 0 |
D | 0 | 1714 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 84075 | 1746 | 2.076717% |
B | 84075 | 2019 | 2.401427% |
C | 84075 | 2703 | 3.214987% |
D | 84074 | 1511 | 1.797226% |
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 | 98560 | 84082 | 90 | 90 | 0.09% | 0.11% |  |
B | 98560 | 84075 | 25 | 25 | 0.03% | 0.03% |  |
C | 98560 | 84075 | 36 | 36 | 0.04% | 0.04% |  |
D | 98560 | 84076 | 113 | 113 | 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 | 3102705 | 2814.07 | 5043 | 4971 | 1100.8 |
A | 13 | 254 | 145333 | 127.51 | 5043 | 4971 | 1100.8 |
A | 14 | 238 | 105414 | 91.25 | 5043 | 4971 | 1100.8 |
B | 6 | 159 | 21489215 | 22288.65 | 5034 | 4962 | 963.9 |
B | 0 | 229 | 538847 | 553.87 | 5034 | 4962 | 963.9 |
B | 4 | 80 | 320297 | 327.14 | 5034 | 4962 | 963.9 |
C | 0 | 10 | 2732437 | 2353.25 | 4839 | 4864 | 1159.1 |
C | 3 | 233 | 1201549 | 1032.46 | 4839 | 4864 | 1159.1 |
C | 4 | 175 | 174244 | 146.13 | 4839 | 4864 | 1159.1 |
D | 8 | 195 | 9065336 | 7981.47 | 4937 | 4807 | 1135.2 |
D | 12 | 218 | 1774782 | 1559.18 | 4937 | 4807 | 1135.2 |
D | 2 | 250 | 540807 | 472.16 | 4937 | 4807 | 1135.2 |
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 |  |