Observation information
- date-obs: 2021-08-18
- time-obs: 14:03:26.901400000
- date-end: 2021-08-18
- time-end: 16:02:46.903600000
- obs_id: A10_109T01_9000004646
- exposure: 4934.0316409
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_109T01_9000004646_31846cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31846cztM0_level2_quad_clean.evt
|
| Size (bytes) | 517,345,920 | 125,271,360 |
| Size | 493.4 MB
| 119.5 MB
|
| Events in quadrant A | 3,239,714 | 883,099 |
| Events in quadrant B | 4,675,970 | 868,395 |
| Events in quadrant C | 3,878,542 | 818,608 |
| Events in quadrant D | 3,478,132 | 816,095 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13316 | 1 |
| B | 0 | 17806 | 1 |
| C | 0 | 15513 | 1 |
| D | 0 | 14083 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5835 | 76 | 1.302485% |
| B | 5836 | 138 | 2.364633% |
| C | 5836 | 310 | 5.311857% |
| D | 5836 | 108 | 1.850583% |
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 | 7160 | 5836 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7161 | 5837 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7161 | 5837 | 112 | 112 | 1.56% | 1.92% |  |
| D | 7161 | 5837 | 24 | 24 | 0.34% | 0.41% |  |
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 | 10041 | 55.1 | 839 | 828 | 167.2 |
| A | 3 | 137 | 7786 | 41.62 | 839 | 828 | 167.2 |
| A | 0 | 226 | 7157 | 37.85 | 839 | 828 | 167.2 |
| B | 6 | 159 | 1466196 | 9642.06 | 810 | 793 | 152.0 |
| B | 0 | 190 | 26402 | 168.5 | 810 | 793 | 152.0 |
| B | 12 | 111 | 17730 | 111.44 | 810 | 793 | 152.0 |
| C | 0 | 10 | 551703 | 3037.38 | 784 | 794 | 181.4 |
| C | 14 | 238 | 137796 | 755.35 | 784 | 794 | 181.4 |
| C | 3 | 233 | 99477 | 544.08 | 784 | 794 | 181.4 |
| D | 8 | 195 | 225924 | 1196.32 | 806 | 791 | 188.2 |
| D | 12 | 218 | 100094 | 527.68 | 806 | 791 | 188.2 |
| D | 2 | 250 | 79985 | 420.82 | 806 | 791 | 188.2 |
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 |  |