Observation information
- date-obs: 2021-06-27
- time-obs: 07:50:48.985900000
- date-end: 2021-07-01
- time-end: 00:34:59.818700000
- obs_id: A10_109T01_9000004492
- exposure: 176932.671856
- 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_9000004492cztM0_level2_bc.evt
| modeM0/AS1A10_109T01_9000004492cztM0_level2_quad_clean.evt
|
Size (bytes) | 12,549,159,360 | 4,080,286,080 |
Size | 11.7 GB
| 3.8 GB
|
Events in quadrant A | 61,946,623 | 26,889,278 |
Events in quadrant B | 137,120,576 | 26,663,843 |
Events in quadrant C | 70,858,904 | 25,899,243 |
Events in quadrant D | 91,616,547 | 25,471,483 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 578221 | 0 |
B | 0 | 832371 | 0 |
C | 0 | 624383 | 0 |
D | 0 | 670511 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 5558 | 0 |
B | 0 | 5554 | 0 |
C | 0 | 5556 | 0 |
D | 0 | 5562 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 456 | 0 |
B | 0 | 456 | 0 |
C | 0 | 456 | 0 |
D | 0 | 456 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 272691 | 3102 | 1.137551% |
B | 272552 | 6535 | 2.397708% |
C | 272732 | 9179 | 3.365575% |
D | 272664 | 4594 | 1.684858% |
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 | 319106 | 272941 | 13 | 13 | 0.00% | 0.00% |  |
B | 319106 | 272809 | 5 | 5 | 0.00% | 0.00% |  |
C | 319106 | 272983 | 127 | 127 | 0.04% | 0.05% |  |
D | 319106 | 272922 | 230 | 230 | 0.07% | 0.08% |  |
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 | 450266 | 126.02 | 15923 | 15714 | 3448.4 |
A | 13 | 170 | 392658 | 109.31 | 15923 | 15714 | 3448.4 |
A | 12 | 96 | 98292 | 23.95 | 15923 | 15714 | 3448.4 |
B | 6 | 159 | 73257948 | 24259.39 | 15921 | 15665 | 3019.1 |
B | 0 | 183 | 1178346 | 385.1 | 15921 | 15665 | 3019.1 |
B | 0 | 190 | 709988 | 229.97 | 15921 | 15665 | 3019.1 |
C | 0 | 10 | 6101798 | 1693.05 | 15314 | 15375 | 3594.9 |
C | 10 | 22 | 3781457 | 1047.6 | 15314 | 15375 | 3594.9 |
C | 15 | 208 | 899093 | 245.82 | 15314 | 15375 | 3594.9 |
D | 8 | 195 | 16812187 | 4690.13 | 15661 | 15229 | 3581.3 |
D | 13 | 174 | 11707256 | 3264.7 | 15661 | 15229 | 3581.3 |
D | 2 | 250 | 1074079 | 295.66 | 15661 | 15229 | 3581.3 |
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 |  |