Observation information
- date-obs: 2018-07-28
- time-obs: 22:08:16.437900000
- date-end: 2018-07-29
- time-end: 00:34:34.434100000
- obs_id: T02_073T01_9000002260
- exposure: 4866.85815655
- sourceid: Cygnus X-1
- observer: mithunnps
- ra_pnt: 299.563
- dec_pnt: 35.202
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_073T01_9000002260_15317cztM0_level2.evt
| modeM0/AS1T02_073T01_9000002260_15317cztM0_level2_quad_clean.evt
|
| Size (bytes) | 591,197,760 | 98,904,960 |
| Size | 563.8 MB
| 94.3 MB
|
| Events in quadrant A | 3,313,288 | 639,830 |
| Events in quadrant B | 3,423,631 | 652,004 |
| Events in quadrant C | 3,654,165 | 636,294 |
| Events in quadrant D | 7,029,469 | 569,991 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14807 | 3 |
| B | 0 | 14975 | 2 |
| C | 0 | 15448 | 2 |
| D | 0 | 25893 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7143 | 51 | 0.713986% |
| B | 7143 | 73 | 1.021980% |
| C | 7143 | 45 | 0.629987% |
| D | 7143 | 1414 | 19.795604% |
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 | 8779 | 7146 | 4 | 4 | 0.05% | 0.06% |  |
| B | 8779 | 7146 | 10 | 10 | 0.11% | 0.14% |  |
| C | 8779 | 7146 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8779 | 7146 | 1219 | 1219 | 13.89% | 17.06% |  |
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 | 9 | 143 | 22310 | 123.71 | 856 | 838 | 173.6 |
| A | 0 | 226 | 7465 | 38.18 | 856 | 838 | 173.6 |
| A | 12 | 194 | 6063 | 30.1 | 856 | 838 | 173.6 |
| B | 0 | 189 | 38220 | 225.21 | 859 | 836 | 166.0 |
| B | 12 | 111 | 19895 | 114.82 | 859 | 836 | 166.0 |
| B | 10 | 16 | 19586 | 112.95 | 859 | 836 | 166.0 |
| C | 3 | 233 | 381492 | 1956.09 | 837 | 843 | 194.6 |
| C | 7 | 221 | 7393 | 33.66 | 837 | 843 | 194.6 |
| C | 13 | 61 | 5720 | 25.06 | 837 | 843 | 194.6 |
| D | 13 | 122 | 3848957 | 20529.73 | 768 | 747 | 187.4 |
| D | 12 | 110 | 108717 | 576.01 | 768 | 747 | 187.4 |
| D | 2 | 33 | 69221 | 365.3 | 768 | 747 | 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 |  |