Observation information
- date-obs: 2018-04-07
- time-obs: 13:53:08.873000000
- date-end: 2018-04-08
- time-end: 01:38:55.879700000
- obs_id: G08_075T01_9000002024
- exposure: 26054.648269
- sourceid: Cygnus X-1
- observer: ravibt
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_075T01_9000002024cztM0_level2_bc.evt
| modeM0/AS1G08_075T01_9000002024cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,411,274,880 | 539,196,480 |
Size | 1.3 GB
| 514.2 MB
|
Events in quadrant A | 9,060,610 | 3,353,716 |
Events in quadrant B | 9,374,552 | 3,348,305 |
Events in quadrant C | 8,976,490 | 3,585,260 |
Events in quadrant D | 12,707,160 | 3,406,928 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 39 | 0 |
B | 0 | 39 | 0 |
C | 0 | 39 | 0 |
D | 0 | 39 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 83835 | 0 |
B | 0 | 86806 | 0 |
C | 0 | 79992 | 0 |
D | 0 | 93676 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 784 | 0 |
B | 0 | 784 | 0 |
C | 0 | 784 | 0 |
D | 0 | 784 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 38413 | 892 | 2.322131% |
B | 38413 | 1199 | 3.121339% |
C | 38413 | 542 | 1.410981% |
D | 38413 | 1043 | 2.715227% |
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 | 42349 | 38417 | 46 | 46 | 0.11% | 0.12% |  |
B | 42349 | 38415 | 14 | 14 | 0.03% | 0.04% |  |
C | 42349 | 38416 | 0 | 0 | 0.00% | 0.00% |  |
D | 42349 | 38415 | 21 | 21 | 0.05% | 0.05% |  |
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 | 9 | 143 | 1187367 | 2727.22 | 1953 | 1909 | 434.7 |
A | 12 | 96 | 169415 | 385.36 | 1953 | 1909 | 434.7 |
A | 15 | 69 | 65261 | 145.75 | 1953 | 1909 | 434.7 |
B | 0 | 219 | 981950 | 2623.38 | 1944 | 1893 | 373.6 |
B | 3 | 64 | 291865 | 776.18 | 1944 | 1893 | 373.6 |
B | 0 | 189 | 182348 | 483.03 | 1944 | 1893 | 373.6 |
C | 3 | 233 | 1133829 | 2402.29 | 1993 | 1954 | 471.2 |
C | 14 | 234 | 24659 | 48.19 | 1993 | 1954 | 471.2 |
C | 8 | 128 | 12107 | 21.55 | 1993 | 1954 | 471.2 |
D | 5 | 222 | 2183531 | 4494.12 | 1988 | 1898 | 485.4 |
D | 8 | 195 | 1499054 | 3084.11 | 1988 | 1898 | 485.4 |
D | 1 | 52 | 346497 | 709.87 | 1988 | 1898 | 485.4 |
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 |  |