Observation information
- date-obs: 2025-04-04
- time-obs: 09:31:35.513800000
- date-end: 2025-04-04
- time-end: 11:41:16.487900000
- obs_id: A13_090T01_9000006458
- exposure: 5214.91875857
- 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_51478cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51478cztM0_level2_quad_clean.evt
|
Size (bytes) | 633,168,000 | 94,415,040 |
Size | 603.8 MB
| 90.0 MB
|
Events in quadrant A | 5,327,810 | 626,357 |
Events in quadrant B | 3,939,506 | 689,460 |
Events in quadrant C | 3,867,221 | 618,991 |
Events in quadrant D | 9,773,872 | 447,370 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 20572 | 2 |
B | 0 | 16440 | 2 |
C | 0 | 16410 | 2 |
D | 0 | 33746 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 9 | 0 |
B | 0 | 9 | 0 |
C | 0 | 9 | 0 |
D | 0 | 9 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 140 | 0 |
B | 0 | 140 | 0 |
C | 0 | 140 | 0 |
D | 0 | 140 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6831 | 359 | 5.255453% |
B | 6832 | 220 | 3.220141% |
C | 6832 | 210 | 3.073770% |
D | 6832 | 1853 | 27.122365% |
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 | 7781 | 6832 | 188 | 188 | 2.42% | 2.75% |  |
B | 7782 | 6833 | 98 | 98 | 1.26% | 1.43% |  |
C | 7782 | 6832 | 115 | 115 | 1.48% | 1.68% |  |
D | 7782 | 6832 | 1787 | 1787 | 22.96% | 26.16% |  |
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 | 3 | 1386579 | 7724.86 | 738 | 720 | 179.4 |
A | 8 | 43 | 250691 | 1393.35 | 738 | 720 | 179.4 |
A | 12 | 194 | 165111 | 916.32 | 738 | 720 | 179.4 |
B | 4 | 81 | 218130 | 1394.48 | 730 | 706 | 155.9 |
B | 8 | 234 | 193608 | 1237.2 | 730 | 706 | 155.9 |
B | 7 | 252 | 150037 | 957.76 | 730 | 706 | 155.9 |
C | 13 | 3 | 278742 | 1370.8 | 724 | 717 | 202.8 |
C | 15 | 215 | 275916 | 1356.86 | 724 | 717 | 202.8 |
C | 0 | 177 | 130214 | 638.48 | 724 | 717 | 202.8 |
D | 8 | 176 | 6234776 | 34375.94 | 643 | 620 | 181.4 |
D | 5 | 32 | 278669 | 1533.2 | 643 | 620 | 181.4 |
D | 11 | 176 | 212428 | 1167.94 | 643 | 620 | 181.4 |
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 |  |