Observation information
- date-obs: 2021-08-16
- time-obs: 11:26:57.859100000
- date-end: 2021-08-16
- time-end: 13:32:49.861300000
- obs_id: A10_109T01_9000004646
- exposure: 4374.98066862
- 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_31815cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31815cztM0_level2_quad_clean.evt
|
| Size (bytes) | 749,381,760 | 107,415,360 |
| Size | 714.7 MB
| 102.4 MB
|
| Events in quadrant A | 6,688,587 | 688,817 |
| Events in quadrant B | 5,908,740 | 729,005 |
| Events in quadrant C | 4,183,069 | 709,486 |
| Events in quadrant D | 5,493,004 | 688,182 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24099 | 1 |
| B | 0 | 21592 | 1 |
| C | 0 | 16938 | 1 |
| D | 0 | 21001 | 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 | 6263 | 1196 | 19.096280% |
| B | 6263 | 451 | 7.201022% |
| C | 6263 | 295 | 4.710203% |
| D | 6262 | 80 | 1.277547% |
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 | 7553 | 6264 | 887 | 887 | 11.74% | 14.16% |  |
| B | 7553 | 6264 | 238 | 238 | 3.15% | 3.80% |  |
| C | 7553 | 6264 | 57 | 57 | 0.75% | 0.91% |  |
| D | 7552 | 6263 | 8 | 8 | 0.11% | 0.13% |  |
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 | 0 | 13 | 3356641 | 19818.62 | 862 | 849 | 169.3 |
| A | 13 | 254 | 10837 | 58.99 | 862 | 849 | 169.3 |
| A | 3 | 137 | 7858 | 41.39 | 862 | 849 | 169.3 |
| B | 6 | 159 | 1555150 | 9370.52 | 878 | 860 | 165.9 |
| B | 10 | 245 | 895587 | 5394.14 | 878 | 860 | 165.9 |
| B | 12 | 111 | 19192 | 110.52 | 878 | 860 | 165.9 |
| C | 0 | 10 | 508070 | 2556.93 | 857 | 867 | 198.4 |
| C | 14 | 238 | 167022 | 837.63 | 857 | 867 | 198.4 |
| C | 3 | 233 | 109133 | 545.79 | 857 | 867 | 198.4 |
| D | 8 | 195 | 2050360 | 9922.12 | 885 | 867 | 206.6 |
| D | 2 | 250 | 78920 | 377.87 | 885 | 867 | 206.6 |
| D | 2 | 234 | 27859 | 130.68 | 885 | 867 | 206.6 |
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 |  |