Observation information
- date-obs: 2019-03-22
- time-obs: 14:19:50.658400000
- date-end: 2019-03-22
- time-end: 16:33:59.659700000
- obs_id: A05_173T01_9000002812
- exposure: 3477.20276248
- 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_18820cztM0_level2.evt
| modeM0/AS1A05_173T01_9000002812_18820cztM0_level2_quad_clean.evt
|
| Size (bytes) | 532,229,760 | 80,133,120 |
| Size | 507.6 MB
| 76.4 MB
|
| Events in quadrant A | 4,046,285 | 486,762 |
| Events in quadrant B | 3,996,373 | 492,852 |
| Events in quadrant C | 3,787,077 | 469,955 |
| Events in quadrant D | 3,787,922 | 462,980 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 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 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16391 | 2 |
| B | 0 | 16359 | 2 |
| C | 0 | 15697 | 2 |
| D | 0 | 16129 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7377 | 205 | 2.778907% |
| B | 7377 | 207 | 2.806019% |
| C | 7377 | 215 | 2.914464% |
| D | 7377 | 187 | 2.534906% |
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 | 7862 | 7378 | 29 | 29 | 0.37% | 0.39% |  |
| B | 7862 | 7378 | 18 | 18 | 0.23% | 0.24% |  |
| C | 7862 | 7378 | 4 | 4 | 0.05% | 0.05% |  |
| D | 7862 | 7378 | 28 | 28 | 0.36% | 0.38% |  |
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 | 8 | 144 | 352220 | 1813.28 | 948 | 927 | 193.7 |
| A | 9 | 143 | 31620 | 158.43 | 948 | 927 | 193.7 |
| A | 13 | 254 | 12327 | 58.84 | 948 | 927 | 193.7 |
| B | 4 | 216 | 90099 | 487.86 | 940 | 917 | 182.8 |
| B | 7 | 220 | 67735 | 365.52 | 940 | 917 | 182.8 |
| B | 6 | 36 | 50778 | 272.76 | 940 | 917 | 182.8 |
| C | 14 | 238 | 139473 | 642.66 | 904 | 910 | 215.6 |
| C | 3 | 233 | 80152 | 367.53 | 904 | 910 | 215.6 |
| C | 0 | 207 | 40807 | 185.04 | 904 | 910 | 215.6 |
| D | 7 | 38 | 224787 | 983.72 | 922 | 896 | 227.6 |
| D | 7 | 238 | 44753 | 192.7 | 922 | 896 | 227.6 |
| D | 2 | 234 | 31401 | 134.03 | 922 | 896 | 227.6 |
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 |  |