Observation information
- date-obs: 2017-10-15
- time-obs: 17:59:00.424800000
- date-end: 2017-10-15
- time-end: 20:25:11.420900000
- obs_id: G08_028T01_9000001618
- exposure: 4990.64548308
- 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_9000001618_11081cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001618_11081cztM0_level2_quad_clean.evt
|
| Size (bytes) | 589,187,520 | 100,080,000 |
| Size | 561.9 MB
| 95.4 MB
|
| Events in quadrant A | 3,780,918 | 648,605 |
| Events in quadrant B | 4,937,268 | 639,496 |
| Events in quadrant C | 3,358,960 | 640,494 |
| Events in quadrant D | 5,269,194 | 591,462 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15928 | 2 |
| B | 0 | 19480 | 2 |
| C | 0 | 14924 | 2 |
| D | 0 | 20501 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7332 | 44 | 0.600109% |
| B | 7332 | 383 | 5.223677% |
| C | 7332 | 24 | 0.327332% |
| D | 7332 | 410 | 5.591926% |
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 | 8772 | 7334 | 1 | 1 | 0.01% | 0.01% |  |
| B | 8772 | 7334 | 213 | 213 | 2.43% | 2.90% |  |
| C | 8772 | 7334 | 1 | 1 | 0.01% | 0.01% |  |
| D | 8772 | 7334 | 402 | 402 | 4.58% | 5.48% |  |
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 | 353272 | 1940.27 | 884 | 865 | 181.6 |
| A | 11 | 29 | 16920 | 88.39 | 884 | 865 | 181.6 |
| A | 0 | 226 | 8061 | 39.62 | 884 | 865 | 181.6 |
| B | 4 | 239 | 1266214 | 7520.32 | 873 | 851 | 168.3 |
| B | 15 | 204 | 108145 | 637.67 | 873 | 851 | 168.3 |
| B | 0 | 214 | 42742 | 248.96 | 873 | 851 | 168.3 |
| C | 8 | 128 | 11445 | 52.97 | 853 | 858 | 199.9 |
| C | 14 | 234 | 8877 | 40.12 | 853 | 858 | 199.9 |
| C | 8 | 112 | 6504 | 28.25 | 853 | 858 | 199.9 |
| D | 1 | 52 | 1294790 | 6417.8 | 834 | 808 | 201.6 |
| D | 10 | 253 | 530273 | 2626.0 | 834 | 808 | 201.6 |
| D | 8 | 195 | 112887 | 555.88 | 834 | 808 | 201.6 |
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 |  |