Observation information
- date-obs: 2021-07-23
- time-obs: 12:42:30.147500000
- date-end: 2021-07-23
- time-end: 14:48:04.147900000
- obs_id: T04_029T01_9000004582
- exposure: 4357.18803445
- sourceid: GRS 1915+105
- observer: ravibt
- ra_pnt: 288.7982
- dec_pnt: 10.94581
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T04_029T01_9000004582_31460cztM0_level2.evt
| modeM0/AS1T04_029T01_9000004582_31460cztM0_level2_quad_clean.evt
|
| Size (bytes) | 629,746,560 | 89,300,160 |
| Size | 600.6 MB
| 85.2 MB
|
| Events in quadrant A | 3,491,567 | 564,693 |
| Events in quadrant B | 5,767,042 | 563,802 |
| Events in quadrant C | 5,186,630 | 533,963 |
| Events in quadrant D | 4,132,188 | 532,912 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14968 | 1 |
| B | 0 | 22292 | 2 |
| C | 0 | 20152 | 1 |
| D | 0 | 16975 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7309 | 154 | 2.106991% |
| B | 7309 | 225 | 3.078396% |
| C | 7309 | 339 | 4.638117% |
| D | 7309 | 129 | 1.764947% |
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 | 7534 | 7309 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7534 | 7309 | 1 | 1 | 0.01% | 0.01% |  |
| C | 7534 | 7309 | 7 | 7 | 0.09% | 0.10% |  |
| D | 7534 | 7309 | 10 | 10 | 0.13% | 0.14% |  |
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 | 13 | 254 | 11824 | 59.91 | 905 | 886 | 182.6 |
| A | 3 | 137 | 9821 | 48.94 | 905 | 886 | 182.6 |
| A | 0 | 226 | 7547 | 36.49 | 905 | 886 | 182.6 |
| B | 6 | 159 | 2113661 | 12307.56 | 885 | 863 | 171.7 |
| B | 0 | 190 | 90993 | 525.03 | 885 | 863 | 171.7 |
| B | 4 | 80 | 57615 | 330.59 | 885 | 863 | 171.7 |
| C | 3 | 233 | 1618007 | 7959.54 | 860 | 864 | 203.2 |
| C | 14 | 238 | 141773 | 693.55 | 860 | 864 | 203.2 |
| C | 0 | 10 | 27499 | 131.09 | 860 | 864 | 203.2 |
| D | 8 | 195 | 791040 | 3804.7 | 874 | 850 | 207.7 |
| D | 2 | 234 | 28164 | 131.51 | 874 | 850 | 207.7 |
| D | 2 | 250 | 25135 | 116.93 | 874 | 850 | 207.7 |
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 |  |