Observation information
- date-obs: 2018-07-28
- time-obs: 04:46:33.391000000
- date-end: 2018-07-31
- time-end: 00:43:54.349200000
- obs_id: T02_073T01_9000002260
- exposure: 133883.893482
- 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_9000002260cztM0_level2_bc.evt
| modeM0/AS1T02_073T01_9000002260cztM0_level2_quad_clean.evt
|
Size (bytes) | 7,308,797,760 | 2,801,390,400 |
Size | 6.8 GB
| 2.6 GB
|
Events in quadrant A | 44,859,396 | 17,873,275 |
Events in quadrant B | 44,743,481 | 18,227,033 |
Events in quadrant C | 50,273,752 | 17,899,448 |
Events in quadrant D | 67,462,629 | 16,763,823 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 340 | 0 |
B | 0 | 340 | 0 |
C | 0 | 340 | 0 |
D | 0 | 341 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 439092 | 0 |
B | 0 | 434781 | 0 |
C | 0 | 441334 | 0 |
D | 0 | 527786 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 4190 | 0 |
B | 0 | 4190 | 0 |
C | 0 | 4190 | 0 |
D | 0 | 4190 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 205716 | 4027 | 1.957553% |
B | 205716 | 3042 | 1.478738% |
C | 205716 | 2081 | 1.011589% |
D | 205716 | 11468 | 5.574676% |
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 | 244643 | 205706 | 43 | 43 | 0.02% | 0.02% |  |
B | 244643 | 205697 | 50 | 50 | 0.02% | 0.02% |  |
C | 244643 | 205704 | 15 | 15 | 0.01% | 0.01% |  |
D | 244643 | 205699 | 1590 | 1590 | 0.65% | 0.77% |  |
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 | 15 | 239 | 3009679 | 1292.51 | 10747 | 10556 | 2320.4 |
A | 9 | 143 | 252842 | 104.42 | 10747 | 10556 | 2320.4 |
A | 2 | 79 | 157292 | 63.24 | 10747 | 10556 | 2320.4 |
B | 10 | 16 | 1097313 | 532.52 | 10893 | 10616 | 2040.7 |
B | 4 | 173 | 442693 | 211.73 | 10893 | 10616 | 2040.7 |
B | 3 | 64 | 345185 | 163.95 | 10893 | 10616 | 2040.7 |
C | 3 | 233 | 7713107 | 3313.18 | 10639 | 10516 | 2324.8 |
C | 7 | 247 | 749969 | 318.07 | 10639 | 10516 | 2324.8 |
C | 4 | 254 | 109662 | 42.65 | 10639 | 10516 | 2324.8 |
D | 13 | 122 | 14523778 | 6043.5 | 10455 | 10104 | 2401.5 |
D | 1 | 255 | 5159126 | 2144.05 | 10455 | 10104 | 2401.5 |
D | 2 | 33 | 3432509 | 1425.09 | 10455 | 10104 | 2401.5 |
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 |  |