Observation information
- date-obs: 2020-10-02
- time-obs: 01:06:15.905500000
- date-end: 2020-10-02
- time-end: 03:23:27.902600000
- obs_id: T03_231T01_9000003910
- exposure: 3855.30385067
- sourceid: GRS 1915+105
- observer: jitheshthejus
- ra_pnt: 288.7981
- dec_pnt: 10.94577
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T03_231T01_9000003910_27101cztM0_level2.evt
| modeM0/AS1T03_231T01_9000003910_27101cztM0_level2_quad_clean.evt
|
| Size (bytes) | 622,431,360 | 85,080,960 |
| Size | 593.6 MB
| 81.1 MB
|
| Events in quadrant A | 4,785,622 | 511,423 |
| Events in quadrant B | 4,118,838 | 531,917 |
| Events in quadrant C | 3,776,060 | 514,500 |
| Events in quadrant D | 5,650,142 | 484,610 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19077 | 0 |
| B | 0 | 16969 | 0 |
| C | 0 | 16014 | 0 |
| D | 0 | 22134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7675 | 464 | 6.045603% |
| B | 7674 | 262 | 3.414126% |
| C | 7674 | 178 | 2.319520% |
| D | 7674 | 321 | 4.182955% |
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 | 7905 | 7676 | 178 | 178 | 2.25% | 2.32% |  |
| B | 7904 | 7675 | 55 | 55 | 0.70% | 0.72% |  |
| C | 7904 | 7675 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7904 | 7675 | 112 | 112 | 1.42% | 1.46% |  |
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 | 14 | 235 | 1114359 | 5835.28 | 941 | 919 | 190.8 |
| A | 12 | 189 | 28595 | 145.04 | 941 | 919 | 190.8 |
| A | 6 | 16 | 11737 | 56.69 | 941 | 919 | 190.8 |
| B | 10 | 245 | 255265 | 1354.55 | 956 | 931 | 187.8 |
| B | 3 | 112 | 50654 | 264.82 | 956 | 931 | 187.8 |
| B | 10 | 246 | 28797 | 148.41 | 956 | 931 | 187.8 |
| C | 14 | 238 | 146248 | 656.8 | 928 | 934 | 221.2 |
| C | 15 | 208 | 10322 | 42.43 | 928 | 934 | 221.2 |
| C | 13 | 61 | 6311 | 24.3 | 928 | 934 | 221.2 |
| D | 13 | 172 | 866663 | 3672.92 | 914 | 895 | 235.7 |
| D | 1 | 52 | 743111 | 3148.76 | 914 | 895 | 235.7 |
| D | 7 | 38 | 259537 | 1097.26 | 914 | 895 | 235.7 |
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 |  |