ASTROSAT CZTI

Data Quality Report

Orbit 57113

Creation date: 2026-04-19T02:23:46.055053
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_083T10_9000006566_57113cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57113cztM0_level2_quad_clean.evt
Size (bytes)581,042,88089,159,040
Size554.1 MB 85.0 MB
Events in quadrant A3,092,782647,308
Events in quadrant B4,224,707637,455
Events in quadrant C6,882,787427,644
Events in quadrant D6,799,609530,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139751
B0171151
C0250701
D0247671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542731.115867%
B65434697.167966%
C6543218533.394467%
D65426489.905228%

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 7472 6543 23 23 0.31% 0.35%
B 7473 6544 299 299 4.00% 4.57%
C 7472 6542 1553 1553 20.78% 23.74%
D 7472 6543 631 631 8.44% 9.64%

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 10 251 114501 642.3 709 691 177.2
A 4 95 98052 549.47 709 691 177.2
A 0 12 34703 191.95 709 691 177.2
B 10 16 1222510 8508.02 673 649 143.6
B 4 171 84336 582.73 673 649 143.6
B 5 185 55501 381.94 673 649 143.6
C 15 198 4339277 29187.82 540 535 148.6
C 12 254 146332 980.81 540 535 148.6
C 12 252 105536 706.37 540 535 148.6
D 15 142 1879971 9928.42 659 626 189.3
D 12 33 1070917 5654.26 659 626 189.3
D 8 160 578158 3051.05 659 626 189.3

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