Observation information
- date-obs: 2018-05-08
- time-obs: 05:09:54.724400000
- date-end: 2018-05-08
- time-end: 17:44:36.709800000
- obs_id: G08_028T01_9000002080
- exposure: 20856.8295826
- 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_9000002080cztM0_level2_bc.evt
| modeM0/AS1G08_028T01_9000002080cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,333,656,000 | 480,248,640 |
Size | 1.2 GB
| 458.0 MB
|
Events in quadrant A | 8,260,550 | 3,050,100 |
Events in quadrant B | 9,511,176 | 3,036,939 |
Events in quadrant C | 8,799,334 | 3,002,559 |
Events in quadrant D | 11,300,609 | 2,921,911 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 78116 | 0 |
B | 0 | 82579 | 0 |
C | 0 | 78195 | 0 |
D | 0 | 87585 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 750 | 0 |
B | 0 | 750 | 0 |
C | 0 | 750 | 0 |
D | 0 | 750 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 85 | 0 |
B | 0 | 85 | 0 |
C | 0 | 85 | 0 |
D | 0 | 85 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 36913 | 449 | 1.216374% |
B | 36913 | 679 | 1.839460% |
C | 36913 | 316 | 0.856067% |
D | 36913 | 765 | 2.072441% |
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 | 45178 | 36915 | 0 | 0 | 0.00% | 0.00% |  |
B | 45178 | 36913 | 49 | 49 | 0.11% | 0.13% |  |
C | 45178 | 36915 | 0 | 0 | 0.00% | 0.00% |  |
D | 45178 | 36915 | 109 | 109 | 0.24% | 0.30% |  |
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 | 15 | 63040 | 134.92 | 2113 | 2079 | 451.8 |
A | 12 | 96 | 32305 | 66.9 | 2113 | 2079 | 451.8 |
A | 15 | 222 | 30684 | 63.31 | 2113 | 2079 | 451.8 |
B | 0 | 85 | 374349 | 958.15 | 2109 | 2067 | 388.5 |
B | 10 | 16 | 361666 | 925.5 | 2109 | 2067 | 388.5 |
B | 0 | 189 | 228921 | 583.86 | 2109 | 2067 | 388.5 |
C | 3 | 233 | 684652 | 1544.09 | 2052 | 2039 | 442.1 |
C | 14 | 234 | 25514 | 53.1 | 2052 | 2039 | 442.1 |
C | 0 | 207 | 20021 | 40.68 | 2052 | 2039 | 442.1 |
D | 10 | 157 | 1716027 | 3660.72 | 2054 | 2006 | 468.2 |
D | 1 | 52 | 804245 | 1713.38 | 2054 | 2006 | 468.2 |
D | 2 | 152 | 295564 | 626.97 | 2054 | 2006 | 468.2 |
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 |  |