Observation information
- date-obs: 2018-11-06
- time-obs: 17:15:52.687800000
- date-end: 2018-11-07
- time-end: 19:03:29.661600000
- obs_id: A05_140T01_9000002496
- exposure: 47459.6651513
- sourceid: Vela X-1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.5547
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A05_140T01_9000002496cztM0_level2_bc.evt
| modeM0/AS1A05_140T01_9000002496cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,672,328,320 | 1,013,495,040 |
Size | 3.4 GB
| 966.5 MB
|
Events in quadrant A | 24,555,566 | 6,391,879 |
Events in quadrant B | 21,590,209 | 6,558,733 |
Events in quadrant C | 21,247,706 | 6,294,593 |
Events in quadrant D | 38,347,403 | 5,934,360 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 125 | 0 |
B | 0 | 125 | 0 |
C | 0 | 125 | 0 |
D | 0 | 125 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1636 | 0 |
B | 0 | 1636 | 0 |
C | 0 | 1636 | 0 |
D | 0 | 1636 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 200504 | 0 |
B | 0 | 186208 | 0 |
C | 0 | 184858 | 0 |
D | 0 | 253221 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 80467 | 3892 | 4.836765% |
B | 80467 | 1700 | 2.112667% |
C | 80467 | 1934 | 2.403470% |
D | 80467 | 7389 | 9.182646% |
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 | 92859 | 80473 | 155 | 155 | 0.17% | 0.19% |  |
B | 92859 | 80469 | 30 | 30 | 0.03% | 0.04% |  |
C | 92859 | 80471 | 11 | 11 | 0.01% | 0.01% |  |
D | 92859 | 80460 | 909 | 909 | 0.98% | 1.13% |  |
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 | 15 | 174 | 7937042 | 8621.94 | 4245 | 4172 | 920.1 |
A | 9 | 143 | 306629 | 328.73 | 4245 | 4172 | 920.1 |
A | 0 | 226 | 28477 | 26.42 | 4245 | 4172 | 920.1 |
B | 15 | 35 | 1308792 | 1606.35 | 4319 | 4220 | 812.1 |
B | 0 | 229 | 688122 | 842.11 | 4319 | 4220 | 812.1 |
B | 0 | 189 | 667824 | 817.11 | 4319 | 4220 | 812.1 |
C | 3 | 233 | 4188001 | 4335.19 | 4139 | 4131 | 965.1 |
C | 0 | 207 | 1084292 | 1119.23 | 4139 | 4131 | 965.1 |
C | 7 | 247 | 38020 | 35.11 | 4139 | 4131 | 965.1 |
D | 1 | 52 | 17496270 | 18049.5 | 4099 | 3966 | 969.1 |
D | 15 | 0 | 1312809 | 1350.53 | 4099 | 3966 | 969.1 |
D | 5 | 222 | 1167742 | 1200.85 | 4099 | 3966 | 969.1 |
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 |  |