Observation information
- date-obs: 2017-10-31
- time-obs: 18:25:43.855700000
- date-end: 2017-11-01
- time-end: 06:27:37.860200000
- obs_id: G08_028T01_9000001656
- exposure: 20422.3994472
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_028T01_9000001656cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001656cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,869,164,800 | 425,338,560 |
Size | 3.6 GB
| 405.6 MB
|
Events in quadrant A | 34,190,312 | 2,478,492 |
Events in quadrant B | 24,107,909 | 2,707,983 |
Events in quadrant C | 23,839,045 | 2,638,718 |
Events in quadrant D | 32,487,349 | 2,446,010 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 770 | 0 |
B | 0 | 770 | 0 |
C | 0 | 770 | 0 |
D | 0 | 770 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 126185 | 0 |
B | 0 | 96086 | 0 |
C | 0 | 96394 | 0 |
D | 0 | 122029 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 54 | 0 |
B | 0 | 54 | 0 |
C | 0 | 54 | 0 |
D | 0 | 54 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 37985 | 6749 | 17.767540% |
B | 37985 | 2168 | 5.707516% |
C | 37985 | 2625 | 6.910623% |
D | 37985 | 4225 | 11.122812% |
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 | 43315 | 37991 | 4048 | 4048 | 9.35% | 10.66% |  |
B | 43315 | 37992 | 831 | 831 | 1.92% | 2.19% |  |
C | 43315 | 37992 | 1877 | 1877 | 4.33% | 4.94% |  |
D | 43315 | 37990 | 3255 | 3255 | 7.51% | 8.57% |  |
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 | 14 | 238 | 14802906 | 17183.42 | 4218 | 4132 | 861.2 |
A | 8 | 5 | 1650713 | 1911.91 | 4218 | 4132 | 861.2 |
A | 1 | 162 | 321959 | 369.04 | 4218 | 4132 | 861.2 |
B | 4 | 239 | 4604015 | 5235.19 | 4611 | 4490 | 878.6 |
B | 3 | 64 | 549080 | 619.85 | 4611 | 4490 | 878.6 |
B | 3 | 189 | 273014 | 305.63 | 4611 | 4490 | 878.6 |
C | 9 | 204 | 6552787 | 6396.67 | 4417 | 4444 | 1023.7 |
C | 13 | 61 | 32916 | 27.81 | 4417 | 4444 | 1023.7 |
C | 9 | 54 | 26131 | 21.18 | 4417 | 4444 | 1023.7 |
D | 10 | 253 | 5211766 | 5094.77 | 4233 | 4115 | 1022.2 |
D | 7 | 80 | 4220576 | 4125.06 | 4233 | 4115 | 1022.2 |
D | 1 | 52 | 2773857 | 2709.7 | 4233 | 4115 | 1022.2 |
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 |  |