Observation information
- date-obs: 2017-08-30
- time-obs: 02:16:35.245900000
- date-end: 2017-08-30
- time-end: 09:54:57.214500000
- obs_id: G07_028T01_9000001500
- exposure: 10470.8240471
- sourceid: GRS 1915+105
- observer: santoshv
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G07_028T01_9000001500cztM0_level2.fits
| modeM0/AS1G07_028T01_9000001500cztM0_level2_quad_clean.evt
|
| Size (bytes) | 225,941,760 | 196,764,480 |
| Size | 215.5 MB
| 187.6 MB
|
| Events in quadrant A | 1,425,908 | 1,166,075 |
| Events in quadrant B | 1,367,292 | 1,190,721 |
| Events in quadrant C | 1,364,906 | 1,102,781 |
| Events in quadrant D | 1,174,208 | 988,046 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45925 | 0 |
| B | 0 | 51346 | 0 |
| C | 0 | 45777 | 0 |
| D | 0 | 54749 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 448 | 0 |
| B | 0 | 448 | 0 |
| C | 0 | 448 | 0 |
| D | 0 | 448 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56 | 0 |
| B | 0 | 56 | 0 |
| C | 0 | 56 | 0 |
| D | 0 | 56 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 21941 | 269 | 1.226015% |
| B | 21941 | 542 | 2.470261% |
| C | 21941 | 203 | 0.925209% |
| D | 21941 | 589 | 2.684472% |
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 | 26941 | 21938 | 0 | 0 | 0.00% | 0.00% |  |
| B | 26941 | 21936 | 0 | 0 | 0.00% | 0.00% |  |
| C | 26941 | 21939 | 0 | 0 | 0.00% | 0.00% |  |
| D | 26941 | 21936 | 0 | 0 | 0.00% | 0.00% |  |
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 | 29 | 1338 | 10.79 | 370 | 348 | 91.7 |
| A | 7 | 110 | 1176 | 9.02 | 370 | 348 | 91.7 |
| A | 9 | 19 | 1083 | 8.01 | 370 | 348 | 91.7 |
| B | 2 | 9 | 1057 | 9.56 | 362 | 347 | 74.2 |
| B | 5 | 128 | 970 | 8.39 | 362 | 347 | 74.2 |
| B | 12 | 226 | 888 | 7.29 | 362 | 347 | 74.2 |
| C | 1 | 81 | 1015 | 7.17 | 360 | 338 | 94.4 |
| C | 1 | 80 | 945 | 6.43 | 360 | 338 | 94.4 |
| C | 9 | 188 | 926 | 6.23 | 360 | 338 | 94.4 |
| D | 6 | 231 | 886 | 6.44 | 335 | 306 | 90.1 |
| D | 7 | 3 | 838 | 5.91 | 335 | 306 | 90.1 |
| D | 6 | 67 | 834 | 5.86 | 335 | 306 | 90.1 |
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 |  |