Observation information
- date-obs: 2019-03-21
- time-obs: 17:38:54.666700000
- date-end: 2019-03-21
- time-end: 19:37:43.668900000
- obs_id: A05_173T01_9000002812
- exposure: 3566.78602906
- sourceid: GRS 1915+105
- observer: rawatdivya
- ra_pnt: 288.7991
- dec_pnt: 10.94602
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_173T01_9000002812_18807cztM0_level2.evt
| modeM0/AS1A05_173T01_9000002812_18807cztM0_level2_quad_clean.evt
|
| Size (bytes) | 475,899,840 | 77,201,280 |
| Size | 453.9 MB
| 73.6 MB
|
| Events in quadrant A | 3,326,034 | 474,387 |
| Events in quadrant B | 3,639,834 | 478,462 |
| Events in quadrant C | 3,555,782 | 459,725 |
| Events in quadrant D | 3,426,879 | 449,016 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14147 | 1 |
| B | 0 | 15137 | 1 |
| C | 0 | 14852 | 1 |
| D | 0 | 14596 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6834 | 52 | 0.760901% |
| B | 6835 | 83 | 1.214338% |
| C | 6835 | 150 | 2.194587% |
| D | 6835 | 81 | 1.185077% |
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 | 7129 | 6835 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7130 | 6836 | 6 | 6 | 0.08% | 0.09% |  |
| C | 7130 | 6836 | 15 | 15 | 0.21% | 0.22% |  |
| D | 7130 | 6836 | 17 | 17 | 0.24% | 0.25% |  |
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 | 4 | 2 | 28153 | 158.84 | 848 | 829 | 172.0 |
| A | 11 | 29 | 13044 | 71.01 | 848 | 829 | 172.0 |
| A | 13 | 254 | 11415 | 61.54 | 848 | 829 | 172.0 |
| B | 7 | 220 | 132054 | 811.75 | 845 | 826 | 161.7 |
| B | 0 | 229 | 98064 | 601.5 | 845 | 826 | 161.7 |
| B | 4 | 216 | 23228 | 138.57 | 845 | 826 | 161.7 |
| C | 3 | 233 | 170714 | 883.92 | 810 | 813 | 192.2 |
| C | 14 | 238 | 124872 | 645.42 | 810 | 813 | 192.2 |
| C | 9 | 54 | 72188 | 371.33 | 810 | 813 | 192.2 |
| D | 14 | 34 | 107986 | 535.86 | 824 | 799 | 200.0 |
| D | 7 | 238 | 58652 | 289.22 | 824 | 799 | 200.0 |
| D | 12 | 233 | 37149 | 181.72 | 824 | 799 | 200.0 |
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 |  |