Observation information
- date-obs: 2019-03-22
- time-obs: 09:18:37.660700000
- date-end: 2019-03-22
- time-end: 11:16:58.658700000
- obs_id: A05_173T01_9000002812
- exposure: 3455.85935536
- sourceid: GRS 1915+105
- observer: rawatdivya
- ra_pnt: 288.7991
- dec_pnt: 10.94602
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_173T01_9000002812_18817cztM0_level2.evt
| modeM0/AS1A05_173T01_9000002812_18817cztM0_level2_quad_clean.evt
|
| Size (bytes) | 438,099,840 | 85,547,520 |
| Size | 417.8 MB
| 81.6 MB
|
| Events in quadrant A | 3,142,662 | 560,001 |
| Events in quadrant B | 3,270,544 | 565,339 |
| Events in quadrant C | 3,409,540 | 534,649 |
| Events in quadrant D | 3,047,828 | 521,971 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 118 | 0 |
| B | 0 | 118 | 0 |
| C | 0 | 118 | 0 |
| D | 0 | 118 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12542 | 1 |
| B | 0 | 13013 | 1 |
| C | 0 | 13620 | 1 |
| D | 0 | 12417 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5851 | 113 | 1.931294% |
| B | 5852 | 114 | 1.948052% |
| C | 5852 | 146 | 2.494874% |
| D | 5852 | 101 | 1.725906% |
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 | 7101 | 5852 | 5 | 5 | 0.07% | 0.09% |  |
| B | 7102 | 5853 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7102 | 5853 | 12 | 12 | 0.17% | 0.21% |  |
| D | 7102 | 5853 | 4 | 4 | 0.06% | 0.07% |  |
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 | 4 | 2 | 58003 | 355.25 | 800 | 787 | 161.1 |
| A | 13 | 254 | 8722 | 49.27 | 800 | 787 | 161.1 |
| A | 0 | 226 | 7220 | 39.94 | 800 | 787 | 161.1 |
| B | 4 | 171 | 50691 | 336.95 | 786 | 769 | 148.2 |
| B | 12 | 18 | 32899 | 216.86 | 786 | 769 | 148.2 |
| B | 0 | 229 | 24015 | 156.9 | 786 | 769 | 148.2 |
| C | 3 | 233 | 264667 | 1510.34 | 751 | 758 | 174.7 |
| C | 14 | 238 | 118674 | 674.83 | 751 | 758 | 174.7 |
| C | 0 | 207 | 98669 | 560.34 | 751 | 758 | 174.7 |
| D | 12 | 233 | 41509 | 217.46 | 773 | 753 | 187.4 |
| D | 7 | 223 | 29806 | 155.02 | 773 | 753 | 187.4 |
| D | 2 | 234 | 23979 | 123.93 | 773 | 753 | 187.4 |
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 |  |