Observation information
- date-obs: 2018-07-24
- time-obs: 22:29:52.346700000
- date-end: 2018-07-25
- time-end: 00:44:29.343700000
- obs_id: T02_073T01_9000002252
- exposure: 4221.08446893
- 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_9000002252_15258cztM0_level2.evt
| modeM0/AS1T02_073T01_9000002252_15258cztM0_level2_quad_clean.evt
|
| Size (bytes) | 441,757,440 | 90,973,440 |
| Size | 421.3 MB
| 86.8 MB
|
| Events in quadrant A | 3,030,570 | 584,908 |
| Events in quadrant B | 3,664,569 | 587,102 |
| Events in quadrant C | 3,320,563 | 578,710 |
| Events in quadrant D | 2,926,200 | 556,045 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13358 | 3 |
| B | 0 | 15108 | 2 |
| C | 0 | 13763 | 2 |
| D | 0 | 13359 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6425 | 15 | 0.233463% |
| B | 6425 | 186 | 2.894942% |
| C | 6425 | 31 | 0.482490% |
| D | 6425 | 14 | 0.217899% |
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 | 7501 | 6427 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7501 | 6427 | 111 | 111 | 1.48% | 1.73% |  |
| C | 7501 | 6427 | 4 | 4 | 0.05% | 0.06% |  |
| D | 7501 | 6427 | 6 | 6 | 0.08% | 0.09% |  |
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 | 12 | 189 | 50713 | 316.88 | 776 | 758 | 157.6 |
| A | 0 | 226 | 6650 | 37.37 | 776 | 758 | 157.6 |
| A | 12 | 194 | 5803 | 32.0 | 776 | 758 | 157.6 |
| B | 10 | 16 | 526361 | 3543.97 | 772 | 753 | 148.3 |
| B | 4 | 48 | 64649 | 430.83 | 772 | 753 | 148.3 |
| B | 3 | 64 | 26565 | 174.04 | 772 | 753 | 148.3 |
| C | 3 | 233 | 324332 | 1845.7 | 759 | 765 | 175.3 |
| C | 4 | 254 | 29886 | 166.11 | 759 | 765 | 175.3 |
| C | 10 | 22 | 5592 | 27.53 | 759 | 765 | 175.3 |
| D | 12 | 221 | 36613 | 194.5 | 753 | 733 | 184.5 |
| D | 2 | 234 | 24370 | 128.13 | 753 | 733 | 184.5 |
| D | 2 | 120 | 10647 | 53.74 | 753 | 733 | 184.5 |
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 |  |