ASTROSAT CZTI

Data Quality Report

Orbit 58294

Creation date: 2026-07-07T12:23:09.079976
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/AS1A14_044T03_9000006588_58294cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58294cztM0_level2_quad_clean.evt
Size (bytes)519,122,88090,780,480
Size495.1 MB 86.6 MB
Events in quadrant A6,716,559561,007
Events in quadrant B4,791,144614,453
Events in quadrant C2,892,216598,842
Events in quadrant D4,333,936540,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241721
B0183871
C0131771
D0170461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621484313.566141%
B621563310.185036%
C6215641.029767%
D62153355.390185%

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 7373 6213 745 745 10.10% 11.99%
B 7375 6215 454 454 6.16% 7.30%
C 7375 6215 20 20 0.27% 0.32%
D 7375 6215 298 298 4.04% 4.79%

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 12 114 3144122 18934.68 674 657 166.0
A 3 14 756265 4551.41 674 657 166.0
A 3 245 35085 207.38 674 657 166.0
B 10 128 1466500 10344.59 667 643 141.7
B 4 206 347638 2448.75 667 643 141.7
B 2 249 111417 781.73 667 643 141.7
C 12 249 108581 576.88 677 673 187.1
C 6 223 43844 230.79 677 673 187.1
C 15 250 28299 147.69 677 673 187.1
D 2 249 1113013 5927.59 663 634 187.7
D 12 110 207538 1102.54 663 634 187.7
D 11 129 173286 920.02 663 634 187.7

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