ASTROSAT CZTI

Data Quality Report

Orbit 51043

Creation date: 2025-03-06T10:32:13.274974
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T02_9000006452_51043cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51043cztM0_level2_quad_clean.evt
Size (bytes)568,690,56080,498,880
Size542.3 MB 76.8 MB
Events in quadrant A5,118,336535,739
Events in quadrant B5,384,374516,928
Events in quadrant C5,706,965502,430
Events in quadrant D4,393,370477,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193301
B0199721
C0210291
D0172441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57891983.420280%
B578993016.064951%
C57894567.877008%
D57902844.905009%

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 6889 5790 163 163 2.37% 2.82%
B 6889 5789 674 674 9.78% 11.64%
C 6889 5790 457 457 6.63% 7.89%
D 6890 5791 268 268 3.89% 4.63%

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 1504881 10269.59 587 573 146.5
A 5 243 221424 1507.7 587 573 146.5
A 3 62 215427 1466.76 587 573 146.5
B 12 32 1755527 15135.96 549 531 115.9
B 10 14 350041 3014.35 549 531 115.9
B 4 206 269981 2323.87 549 531 115.9
C 12 249 2323525 14897.9 562 557 155.9
C 13 3 316839 2028.41 562 557 155.9
C 12 247 213511 1365.74 562 557 155.9
D 8 176 721989 4525.52 559 541 159.4
D 2 216 457061 2863.67 559 541 159.4
D 9 1 271306 1698.46 559 541 159.4

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