Observation information
- date-obs: 2019-07-07
- time-obs: 14:50:36.453900000
- date-end: 2019-07-08
- time-end: 16:18:31.370000000
- obs_id: A05_140T01_9000003016
- exposure: 48888.4032431
- 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_9000003016cztM0_level2_bc.evt
| modeM0/AS1A05_140T01_9000003016cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,633,685,120 | 1,071,397,440 |
Size | 2.5 GB
| 1021.8 MB
|
Events in quadrant A | 17,326,735 | 6,938,776 |
Events in quadrant B | 18,589,683 | 6,948,503 |
Events in quadrant C | 16,382,342 | 6,654,079 |
Events in quadrant D | 22,110,653 | 6,528,671 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1600 | 0 |
B | 0 | 1600 | 0 |
C | 0 | 1600 | 0 |
D | 0 | 1600 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 132 | 0 |
B | 0 | 132 | 0 |
C | 0 | 132 | 0 |
D | 0 | 132 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 163607 | 0 |
B | 0 | 168497 | 0 |
C | 0 | 163126 | 0 |
D | 0 | 180275 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 78520 | 823 | 1.048141% |
B | 78520 | 1108 | 1.411105% |
C | 78520 | 1194 | 1.520632% |
D | 78520 | 1683 | 2.143403% |
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 | 91676 | 78521 | 1 | 1 | 0.00% | 0.00% |  |
B | 91676 | 78519 | 4 | 4 | 0.00% | 0.01% |  |
C | 91676 | 78518 | 0 | 0 | 0.00% | 0.00% |  |
D | 91676 | 78519 | 237 | 237 | 0.26% | 0.30% |  |
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 | 16 | 333202 | 347.38 | 4373 | 4315 | 946.8 |
A | 12 | 194 | 76927 | 76.69 | 4373 | 4315 | 946.8 |
A | 13 | 254 | 62971 | 61.95 | 4373 | 4315 | 946.8 |
B | 10 | 245 | 737154 | 887.74 | 4383 | 4294 | 825.5 |
B | 0 | 189 | 408879 | 490.09 | 4383 | 4294 | 825.5 |
B | 4 | 216 | 198923 | 235.76 | 4383 | 4294 | 825.5 |
C | 7 | 220 | 129178 | 128.37 | 4171 | 4166 | 973.9 |
C | 3 | 233 | 102047 | 100.51 | 4171 | 4166 | 973.9 |
C | 0 | 207 | 43064 | 39.94 | 4171 | 4166 | 973.9 |
D | 1 | 52 | 2837572 | 2877.59 | 4261 | 4133 | 984.7 |
D | 13 | 153 | 1063189 | 1075.56 | 4261 | 4133 | 984.7 |
D | 2 | 16 | 1007096 | 1018.59 | 4261 | 4133 | 984.7 |
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 |  |