Observation information
- date-obs: 2019-03-15
- time-obs: 14:42:45.522700000
- date-end: 2019-03-16
- time-end: 03:30:05.551400000
- obs_id: T03_091T01_9000002798
- exposure: 26304.8865063
- sourceid: Vela X1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.55469
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T03_091T01_9000002798cztM0_level2_bc.evt
| modeM0/AS1T03_091T01_9000002798cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,424,707,200 | 541,134,720 |
Size | 1.3 GB
| 516.1 MB
|
Events in quadrant A | 8,274,541 | 3,501,682 |
Events in quadrant B | 13,492,231 | 3,460,372 |
Events in quadrant C | 9,009,763 | 3,355,369 |
Events in quadrant D | 9,619,871 | 3,306,033 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 83289 | 0 |
B | 0 | 103837 | 0 |
C | 0 | 87110 | 0 |
D | 0 | 88099 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 57 | 0 |
B | 0 | 57 | 0 |
C | 0 | 57 | 0 |
D | 0 | 57 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 824 | 0 |
B | 0 | 824 | 0 |
C | 0 | 824 | 0 |
D | 0 | 824 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 40291 | 351 | 0.871162% |
B | 40291 | 2425 | 6.018714% |
C | 40291 | 596 | 1.479239% |
D | 40291 | 424 | 1.052344% |
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 | 46041 | 40293 | 4 | 4 | 0.01% | 0.01% |  |
B | 46041 | 40292 | 362 | 362 | 0.79% | 0.90% |  |
C | 46041 | 40291 | 1 | 1 | 0.00% | 0.00% |  |
D | 46041 | 40292 | 46 | 46 | 0.10% | 0.11% |  |
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 | 4 | 2 | 61271 | 128.66 | 2098 | 2064 | 460.2 |
A | 13 | 254 | 59511 | 124.83 | 2098 | 2064 | 460.2 |
A | 0 | 13 | 39395 | 81.12 | 2098 | 2064 | 460.2 |
B | 10 | 245 | 5161212 | 13073.27 | 2080 | 2027 | 394.6 |
B | 7 | 220 | 73969 | 182.3 | 2080 | 2027 | 394.6 |
B | 4 | 216 | 46561 | 112.85 | 2080 | 2027 | 394.6 |
C | 3 | 233 | 1123490 | 2389.88 | 2001 | 1990 | 469.3 |
C | 9 | 54 | 116680 | 244.4 | 2001 | 1990 | 469.3 |
C | 0 | 207 | 40266 | 81.56 | 2001 | 1990 | 469.3 |
D | 1 | 52 | 619224 | 1301.1 | 2042 | 1973 | 474.4 |
D | 7 | 238 | 472694 | 992.23 | 2042 | 1973 | 474.4 |
D | 7 | 223 | 222057 | 463.91 | 2042 | 1973 | 474.4 |
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 |  |