Observation information
- date-obs: 2015-10-24
- time-obs: 04:33:03.446900000
- date-end: 2015-10-24
- time-end: 04:57:10.445300000
- obs_id: P01_161T04_9000000060
- sourceid: GRS 1915+105
- observer: parag
- ra_pnt: 288.7983
- dec_pnt: 10.94556
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1P01_161T04_9000000060_00386cztM0_level2.evt
| modeM0/AS1P01_161T04_9000000060_00386cztM0_level2_quad_clean.evt
|
| Size (bytes) | 234,138,240 | 20,537,280 |
| Size | 223.3 MB
| 19.6 MB
|
| Events in quadrant A | 1,693,925 | 132,382 |
| Events in quadrant B | 1,645,549 | 126,861 |
| Events in quadrant C | 1,510,272 | 131,085 |
| Events in quadrant D | 2,142,337 | 123,650 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 28 | 0 |
| B | 0 | 28 | 0 |
| C | 0 | 28 | 0 |
| D | 0 | 28 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6059 | 0 |
| B | 0 | 5914 | 0 |
| C | 0 | 5536 | 0 |
| D | 0 | 7406 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 1448 | 2 | 0.138122% |
| B | 1448 | 2 | 0.138122% |
| C | 1448 | 2 | 0.138122% |
| D | 1448 | 59 | 4.074586% |
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 | 1448 | 1448 | 27 | 27 | 1.86% | 1.86% |  |
| B | 1448 | 1448 | 17 | 17 | 1.17% | 1.17% |  |
| C | 1448 | 1448 | 7 | 7 | 0.48% | 0.48% |  |
| D | 1448 | 1448 | 194 | 194 | 13.40% | 13.40% |  |
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 | 0 | 238 | 28811 | 305.01 | 421 | 419 | 93.1 |
| A | 15 | 200 | 11404 | 118.01 | 421 | 419 | 93.1 |
| A | 12 | 243 | 6778 | 68.31 | 421 | 419 | 93.1 |
| B | 4 | 82 | 26135 | 257.47 | 417 | 419 | 99.9 |
| B | 15 | 82 | 5369 | 49.56 | 417 | 419 | 99.9 |
| B | 0 | 23 | 4349 | 39.35 | 417 | 419 | 99.9 |
| C | 3 | 159 | 32732 | 304.26 | 373 | 386 | 106.3 |
| C | 3 | 9 | 6267 | 55.32 | 373 | 386 | 106.3 |
| C | 5 | 234 | 3999 | 33.99 | 373 | 386 | 106.3 |
| D | 13 | 7 | 450902 | 3944.86 | 367 | 380 | 114.2 |
| D | 1 | 4 | 87439 | 762.31 | 367 | 380 | 114.2 |
| D | 1 | 5 | 63384 | 551.68 | 367 | 380 | 114.2 |
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 |  |