Observation information
- date-obs: 2025-04-01
- time-obs: 01:41:12.419500000
- date-end: 2025-04-01
- time-end: 10:05:52.321600000
- obs_id: A13_090T01_9000006458
- exposure: 8355.09570539
- 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_51432cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51432cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,585,000,960 | 339,073,920 |
Size | 3.3 GB
| 323.4 MB
|
Events in quadrant A | 29,476,020 | 2,400,235 |
Events in quadrant B | 17,335,391 | 2,848,419 |
Events in quadrant C | 60,926,970 | 739,139 |
Events in quadrant D | 22,708,173 | 2,263,173 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 107938 | 2 |
B | 0 | 72294 | 2 |
C | 0 | 200955 | 2 |
D | 0 | 88130 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 10 | 0 |
B | 0 | 10 | 0 |
C | 0 | 10 | 0 |
D | 0 | 10 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 590 | 0 |
B | 0 | 590 | 0 |
C | 0 | 590 | 0 |
D | 0 | 590 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 29295 | 3945 | 13.466462% |
B | 29295 | 1305 | 4.454685% |
C | 29295 | 21430 | 73.152415% |
D | 29296 | 2602 | 8.881759% |
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 | 30280 | 29296 | 2828 | 2828 | 9.34% | 9.65% |  |
B | 30280 | 29296 | 796 | 796 | 2.63% | 2.72% |  |
C | 30279 | 29294 | 20173 | 20173 | 66.62% | 68.86% |  |
D | 30281 | 29298 | 2307 | 2307 | 7.62% | 7.87% |  |
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 | 5055889 | 6925.89 | 2955 | 2884 | 729.6 |
A | 7 | 64 | 4473507 | 6127.65 | 2955 | 2884 | 729.6 |
A | 12 | 3 | 3833686 | 5250.68 | 2955 | 2884 | 729.6 |
B | 12 | 18 | 1207156 | 1843.09 | 3045 | 2931 | 653.4 |
B | 15 | 52 | 774736 | 1181.26 | 3045 | 2931 | 653.4 |
B | 5 | 185 | 531682 | 809.26 | 3045 | 2931 | 653.4 |
C | 15 | 179 | 30760655 | 71157.45 | 1562 | 1551 | 432.3 |
C | 4 | 12 | 19055572 | 44079.16 | 1562 | 1551 | 432.3 |
C | 10 | 171 | 1484414 | 3430.42 | 1562 | 1551 | 432.3 |
D | 7 | 60 | 4028452 | 5024.27 | 2903 | 2813 | 801.2 |
D | 6 | 42 | 1973096 | 2459.05 | 2903 | 2813 | 801.2 |
D | 3 | 12 | 1335088 | 1662.77 | 2903 | 2813 | 801.2 |
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 |  |