Observation information
- date-obs: 2018-07-24
- time-obs: 08:45:25.371800000
- date-end: 2018-07-25
- time-end: 02:21:59.340800000
- obs_id: T02_073T01_9000002252
- exposure: 34876.3863352
- 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_9000002252cztM0_level2_bc.evt
| modeM0/AS1T02_073T01_9000002252cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,801,105,920 | 738,241,920 |
Size | 1.7 GB
| 704.0 MB
|
Events in quadrant A | 11,673,341 | 4,728,133 |
Events in quadrant B | 13,614,474 | 4,787,065 |
Events in quadrant C | 13,860,878 | 4,702,058 |
Events in quadrant D | 11,796,685 | 4,521,866 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 106 | 0 |
B | 0 | 106 | 0 |
C | 0 | 106 | 0 |
D | 0 | 106 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 111230 | 0 |
B | 0 | 118703 | 0 |
C | 0 | 115636 | 0 |
D | 0 | 112277 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1076 | 0 |
B | 0 | 1076 | 0 |
C | 0 | 1076 | 0 |
D | 0 | 1076 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 52804 | 459 | 0.869252% |
B | 52804 | 1244 | 2.355882% |
C | 52804 | 626 | 1.185516% |
D | 52804 | 519 | 0.982880% |
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 | 63396 | 52802 | 2 | 2 | 0.00% | 0.00% |  |
B | 63396 | 52804 | 153 | 153 | 0.24% | 0.29% |  |
C | 63396 | 52801 | 28 | 28 | 0.04% | 0.05% |  |
D | 63396 | 52803 | 28 | 28 | 0.04% | 0.05% |  |
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 | 831351 | 1365.78 | 2805 | 2750 | 606.7 |
A | 9 | 143 | 44217 | 68.35 | 2805 | 2750 | 606.7 |
A | 15 | 69 | 19034 | 26.84 | 2805 | 2750 | 606.7 |
B | 10 | 16 | 1729707 | 3210.78 | 2838 | 2764 | 537.9 |
B | 10 | 245 | 268853 | 494.72 | 2838 | 2764 | 537.9 |
B | 3 | 64 | 218778 | 401.62 | 2838 | 2764 | 537.9 |
C | 3 | 233 | 2688467 | 4388.79 | 2771 | 2735 | 612.0 |
C | 4 | 254 | 202926 | 327.14 | 2771 | 2735 | 612.0 |
C | 14 | 234 | 67513 | 105.85 | 2771 | 2735 | 612.0 |
D | 10 | 70 | 371761 | 579.81 | 2775 | 2678 | 636.6 |
D | 2 | 33 | 244822 | 380.39 | 2775 | 2678 | 636.6 |
D | 2 | 234 | 185124 | 286.61 | 2775 | 2678 | 636.6 |
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 |  |