Observation information
- date-obs: 2017-10-24
- time-obs: 11:03:29.589700000
- date-end: 2017-10-25
- time-end: 02:20:06.662500000
- obs_id: G08_075T01_9000001636
- exposure: 25180.3372041
- 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_9000001636cztM0_level2.evt
| modeM0/AS1G08_075T01_9000001636cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,547,958,400 | 517,913,280 |
Size | 3.3 GB
| 493.9 MB
|
Events in quadrant A | 33,029,654 | 3,148,211 |
Events in quadrant B | 24,038,468 | 3,266,449 |
Events in quadrant C | 19,852,757 | 3,255,972 |
Events in quadrant D | 27,591,028 | 3,019,712 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 84 | 0 |
B | 0 | 82 | 0 |
C | 0 | 83 | 0 |
D | 0 | 84 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 127738 | 0 |
B | 0 | 100229 | 0 |
C | 0 | 89691 | 0 |
D | 0 | 112204 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 892 | 0 |
B | 0 | 888 | 0 |
C | 0 | 892 | 0 |
D | 0 | 896 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 43552 | 2165 | 4.971069% |
B | 43637 | 1040 | 2.383299% |
C | 43634 | 259 | 0.593574% |
D | 43633 | 1724 | 3.951138% |
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 | 54998 | 43664 | 1101 | 1101 | 2.00% | 2.52% |  |
B | 54998 | 43745 | 408 | 408 | 0.74% | 0.93% |  |
C | 54998 | 43736 | 35 | 35 | 0.06% | 0.08% |  |
D | 54998 | 43736 | 1215 | 1215 | 2.21% | 2.78% |  |
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 | 8 | 5 | 5980214 | 5948.09 | 5025 | 4918 | 1004.6 |
A | 8 | 15 | 3590475 | 3569.23 | 5025 | 4918 | 1004.6 |
A | 14 | 238 | 1747534 | 1734.68 | 5025 | 4918 | 1004.6 |
B | 4 | 239 | 2814149 | 2926.21 | 5120 | 5002 | 960.0 |
B | 15 | 204 | 508241 | 524.21 | 5120 | 5002 | 960.0 |
B | 3 | 189 | 141050 | 141.72 | 5120 | 5002 | 960.0 |
C | 4 | 254 | 147523 | 123.99 | 5013 | 5040 | 1149.2 |
C | 1 | 3 | 93225 | 76.74 | 5013 | 5040 | 1149.2 |
C | 13 | 61 | 37727 | 28.44 | 5013 | 5040 | 1149.2 |
D | 1 | 52 | 2993917 | 2552.57 | 4891 | 4765 | 1171.0 |
D | 10 | 253 | 1083955 | 921.57 | 4891 | 4765 | 1171.0 |
D | 2 | 14 | 900738 | 765.11 | 4891 | 4765 | 1171.0 |
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 |  |