Observation information
- date-obs: 2025-04-03
- time-obs: 00:22:47.889200000
- date-end: 2025-04-03
- time-end: 06:03:03.825900000
- obs_id: A13_090T01_9000006458
- exposure: 4778.69313097
- sourceid: 4U 1755-338
- observer: arbind2196
- ra_pnt: 269.6667
- dec_pnt: -33.8075
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A13_090T01_9000006458_51461cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51461cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,779,623,360 | 215,861,760 |
Size | 2.6 GB
| 205.9 MB
|
Events in quadrant A | 21,743,486 | 1,522,469 |
Events in quadrant B | 14,659,557 | 1,856,308 |
Events in quadrant C | 42,835,146 | 425,536 |
Events in quadrant D | 22,110,686 | 1,349,289 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 78578 | 2 |
B | 0 | 57568 | 2 |
C | 0 | 140935 | 2 |
D | 0 | 79756 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 3 | 0 |
B | 0 | 3 | 0 |
C | 0 | 3 | 0 |
D | 0 | 3 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 404 | 0 |
B | 0 | 404 | 0 |
C | 0 | 404 | 0 |
D | 0 | 404 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 20042 | 3946 | 19.688654% |
B | 20042 | 1612 | 8.043109% |
C | 20042 | 15871 | 79.188704% |
D | 20042 | 3769 | 18.805508% |
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 | 20417 | 20045 | 2896 | 2896 | 14.18% | 14.45% |  |
B | 20417 | 20045 | 1175 | 1175 | 5.76% | 5.86% |  |
C | 20417 | 20042 | 12959 | 12959 | 63.47% | 64.66% |  |
D | 20417 | 20045 | 3541 | 3541 | 17.34% | 17.67% |  |
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 | 7 | 64 | 6781441 | 13897.96 | 1987 | 1931 | 487.8 |
A | 12 | 250 | 4715272 | 9662.32 | 1987 | 1931 | 487.8 |
A | 5 | 240 | 457197 | 933.29 | 1987 | 1931 | 487.8 |
B | 5 | 172 | 3601997 | 8046.2 | 2083 | 2004 | 447.4 |
B | 15 | 52 | 605736 | 1349.38 | 2083 | 2004 | 447.4 |
B | 4 | 206 | 377781 | 839.88 | 2083 | 2004 | 447.4 |
C | 4 | 12 | 22503812 | 81279.47 | 1008 | 999 | 276.9 |
C | 15 | 179 | 14735936 | 53222.14 | 1008 | 999 | 276.9 |
C | 13 | 3 | 351773 | 1266.98 | 1008 | 999 | 276.9 |
D | 6 | 42 | 7395339 | 14045.14 | 1891 | 1827 | 526.4 |
D | 10 | 199 | 1437530 | 2727.34 | 1891 | 1827 | 526.4 |
D | 8 | 176 | 1181242 | 2240.48 | 1891 | 1827 | 526.4 |
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 |  |