Observation information
- date-obs: 2017-08-30
- time-obs: 02:19:55.225900000
- date-end: 2017-08-30
- time-end: 04:37:15.221500000
- obs_id: G07_028T01_9000001500
- exposure: 2840.35026219
- 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_9000001500_10391cztM0_level2.evt
| modeM0/AS1G07_028T01_9000001500_10391cztM0_level2_quad_clean.evt
|
| Size (bytes) | 503,913,600 | 69,217,920 |
| Size | 480.6 MB
| 66.0 MB
|
| Events in quadrant A | 3,316,712 | 417,590 |
| Events in quadrant B | 3,771,156 | 432,339 |
| Events in quadrant C | 3,209,210 | 414,688 |
| Events in quadrant D | 4,518,166 | 372,914 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13772 | 3 |
| B | 0 | 15254 | 2 |
| C | 0 | 13568 | 2 |
| D | 0 | 17744 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6569 | 32 | 0.487137% |
| B | 6569 | 104 | 1.583194% |
| C | 6569 | 16 | 0.243568% |
| D | 6569 | 274 | 4.171107% |
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 | 7879 | 6570 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7879 | 6570 | 32 | 32 | 0.41% | 0.49% |  |
| C | 7879 | 6570 | 2 | 2 | 0.03% | 0.03% |  |
| D | 7879 | 6570 | 274 | 274 | 3.48% | 4.17% |  |
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 | 5 | 16 | 30741 | 172.8 | 849 | 832 | 173.1 |
| A | 8 | 15 | 12016 | 64.62 | 849 | 832 | 173.1 |
| A | 0 | 226 | 7828 | 40.42 | 849 | 832 | 173.1 |
| B | 4 | 239 | 265197 | 1650.37 | 855 | 838 | 160.2 |
| B | 0 | 214 | 54392 | 334.33 | 855 | 838 | 160.2 |
| B | 11 | 51 | 53906 | 331.3 | 855 | 838 | 160.2 |
| C | 14 | 234 | 11441 | 56.63 | 817 | 825 | 187.5 |
| C | 0 | 207 | 8337 | 40.07 | 817 | 825 | 187.5 |
| C | 13 | 61 | 6174 | 28.53 | 817 | 825 | 187.5 |
| D | 13 | 122 | 429963 | 2268.5 | 792 | 773 | 189.2 |
| D | 13 | 105 | 273157 | 1439.7 | 792 | 773 | 189.2 |
| D | 8 | 195 | 248708 | 1310.47 | 792 | 773 | 189.2 |
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 |  |