Observation information
- date-obs: 2025-03-31
- time-obs: 08:26:03.612800000
- date-end: 2025-03-31
- time-end: 12:13:07.568700000
- obs_id: A13_090T01_9000006458
- exposure: 3619.41047281
- 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_51418cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51418cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,414,719,360 | 145,045,440 |
Size | 1.3 GB
| 138.3 MB
|
Events in quadrant A | 8,807,248 | 1,071,373 |
Events in quadrant B | 9,222,555 | 1,164,773 |
Events in quadrant C | 26,459,477 | 330,962 |
Events in quadrant D | 6,944,061 | 987,985 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 34258 | 2 |
B | 0 | 35887 | 2 |
C | 0 | 86812 | 2 |
D | 0 | 29233 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 16 | 0 |
B | 0 | 16 | 0 |
C | 0 | 16 | 0 |
D | 0 | 16 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 244 | 0 |
B | 0 | 244 | 0 |
C | 0 | 244 | 0 |
D | 0 | 244 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 12094 | 699 | 5.779725% |
B | 12095 | 683 | 5.646962% |
C | 12095 | 8873 | 73.360893% |
D | 12095 | 435 | 3.596527% |
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 | 13624 | 12094 | 402 | 402 | 2.95% | 3.32% |  |
B | 13625 | 12095 | 255 | 255 | 1.87% | 2.11% |  |
C | 13625 | 12095 | 7897 | 7897 | 57.96% | 65.29% |  |
D | 13625 | 12096 | 251 | 251 | 1.84% | 2.08% |  |
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 | 250 | 884950 | 2781.05 | 1288 | 1252 | 317.8 |
A | 15 | 174 | 859614 | 2701.32 | 1288 | 1252 | 317.8 |
A | 4 | 175 | 507607 | 1593.53 | 1288 | 1252 | 317.8 |
B | 10 | 254 | 1754232 | 6445.82 | 1274 | 1226 | 272.0 |
B | 5 | 172 | 750239 | 2754.13 | 1274 | 1226 | 272.0 |
B | 5 | 185 | 505796 | 1855.31 | 1274 | 1226 | 272.0 |
C | 4 | 12 | 10132802 | 48303.19 | 768 | 767 | 209.8 |
C | 15 | 179 | 8983059 | 42821.93 | 768 | 767 | 209.8 |
C | 15 | 230 | 2210218 | 10533.28 | 768 | 767 | 209.8 |
D | 6 | 42 | 489531 | 1395.11 | 1261 | 1213 | 350.0 |
D | 2 | 153 | 287205 | 817.07 | 1261 | 1213 | 350.0 |
D | 3 | 12 | 265002 | 753.64 | 1261 | 1213 | 350.0 |
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 |  |