Observation information
- date-obs: 2018-07-25
- time-obs: 00:21:32.343600000
- date-end: 2018-07-25
- time-end: 02:21:59.340800000
- obs_id: T02_073T01_9000002252
- exposure: 4313.89884287
- 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_15260cztM0_level2.evt
| modeM0/AS1T02_073T01_9000002252_15260cztM0_level2_quad_clean.evt
|
| Size (bytes) | 456,612,480 | 90,135,360 |
| Size | 435.5 MB
| 86.0 MB
|
| Events in quadrant A | 3,161,618 | 575,031 |
| Events in quadrant B | 3,364,512 | 583,020 |
| Events in quadrant C | 3,805,551 | 566,237 |
| Events in quadrant D | 3,051,932 | 548,701 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13771 | 3 |
| B | 0 | 14277 | 3 |
| C | 0 | 15428 | 3 |
| D | 0 | 13818 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6541 | 75 | 1.146614% |
| B | 6541 | 153 | 2.339092% |
| C | 6541 | 188 | 2.874178% |
| D | 6541 | 50 | 0.764409% |
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 | 7107 | 6544 | 10 | 10 | 0.14% | 0.15% |  |
| B | 7107 | 6544 | 32 | 32 | 0.45% | 0.49% |  |
| C | 7107 | 6544 | 69 | 69 | 0.97% | 1.05% |  |
| D | 7107 | 6544 | 30 | 30 | 0.42% | 0.46% |  |
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 | 74147 | 459.24 | 788 | 772 | 159.8 |
| A | 9 | 143 | 59560 | 367.95 | 788 | 772 | 159.8 |
| A | 0 | 226 | 6742 | 37.37 | 788 | 772 | 159.8 |
| B | 10 | 16 | 209409 | 1377.15 | 787 | 768 | 151.5 |
| B | 4 | 48 | 41315 | 267.63 | 787 | 768 | 151.5 |
| B | 12 | 111 | 18339 | 115.98 | 787 | 768 | 151.5 |
| C | 3 | 233 | 755247 | 4282.69 | 762 | 767 | 176.2 |
| C | 0 | 207 | 44225 | 246.68 | 762 | 767 | 176.2 |
| C | 4 | 254 | 30831 | 170.65 | 762 | 767 | 176.2 |
| D | 2 | 33 | 89364 | 476.35 | 763 | 740 | 186.0 |
| D | 2 | 136 | 61408 | 326.09 | 763 | 740 | 186.0 |
| D | 2 | 234 | 23506 | 122.37 | 763 | 740 | 186.0 |
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 |  |