Observation information
- date-obs: 2019-03-12
- time-obs: 16:31:53.440300000
- date-end: 2019-03-13
- time-end: 06:28:17.496200000
- obs_id: T03_091T01_9000002790
- exposure: 27391.8437185
- 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_9000002790cztM0_level2_bc.evt
| modeM0/AS1T03_091T01_9000002790cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,588,216,320 | 575,726,400 |
Size | 1.5 GB
| 549.1 MB
|
Events in quadrant A | 9,110,373 | 3,675,412 |
Events in quadrant B | 9,941,964 | 3,746,883 |
Events in quadrant C | 9,461,654 | 3,541,017 |
Events in quadrant D | 16,535,908 | 3,406,601 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 910 | 0 |
B | 0 | 910 | 0 |
C | 0 | 910 | 0 |
D | 0 | 910 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 55 | 0 |
B | 0 | 55 | 0 |
C | 0 | 55 | 0 |
D | 0 | 55 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 91833 | 0 |
B | 0 | 94722 | 0 |
C | 0 | 94411 | 0 |
D | 0 | 115152 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 44700 | 299 | 0.668904% |
B | 44700 | 537 | 1.201342% |
C | 44700 | 668 | 1.494407% |
D | 44700 | 1504 | 3.364653% |
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 | 50185 | 44699 | 5 | 5 | 0.01% | 0.01% |  |
B | 50185 | 44701 | 12 | 12 | 0.02% | 0.03% |  |
C | 50185 | 44697 | 4 | 4 | 0.01% | 0.01% |  |
D | 50185 | 44699 | 243 | 243 | 0.48% | 0.54% |  |
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 | 69063 | 130.96 | 2320 | 2281 | 509.9 |
A | 6 | 16 | 62030 | 117.17 | 2320 | 2281 | 509.9 |
A | 11 | 29 | 34810 | 63.79 | 2320 | 2281 | 509.9 |
B | 4 | 80 | 194737 | 429.38 | 2359 | 2303 | 448.2 |
B | 0 | 197 | 137032 | 300.62 | 2359 | 2303 | 448.2 |
B | 7 | 220 | 113770 | 248.72 | 2359 | 2303 | 448.2 |
C | 3 | 233 | 545970 | 1030.07 | 2224 | 2214 | 527.9 |
C | 9 | 54 | 351948 | 662.52 | 2224 | 2214 | 527.9 |
C | 9 | 221 | 15152 | 24.51 | 2224 | 2214 | 527.9 |
D | 1 | 52 | 5624031 | 10646.12 | 2241 | 2160 | 528.1 |
D | 7 | 238 | 1617846 | 3059.62 | 2241 | 2160 | 528.1 |
D | 12 | 110 | 479785 | 904.48 | 2241 | 2160 | 528.1 |
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 |  |