ASTROSAT CZTI

Data Quality Report

Orbit 56380

Creation date: 2026-02-28T18:21:08.846933
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_083T05_9000006554_56380cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56380cztM0_level2_quad_clean.evt
Size (bytes)864,653,76088,237,440
Size824.6 MB 84.1 MB
Events in quadrant A12,375,484343,657
Events in quadrant B4,220,856737,553
Events in quadrant C5,867,579615,510
Events in quadrant D8,974,452464,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417194
B0176160
C0226840
D0316750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7336375751.213195%
B73362523.435115%
C73367309.950927%
D7337201227.422652%

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 7336 7336 3727 3727 50.80% 50.80%
B 7336 7336 158 158 2.15% 2.15%
C 7336 7336 767 767 10.46% 10.46%
D 7337 7337 1867 1867 25.45% 25.45%

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 7622081 55147.18 551 535 138.2
A 12 194 923994 6681.87 551 535 138.2
A 4 95 590298 4267.35 551 535 138.2
B 5 185 347673 2076.18 783 753 167.1
B 1 223 274597 1638.85 783 753 167.1
B 8 128 105341 625.92 783 753 167.1
C 13 3 1504826 7448.11 742 736 201.9
C 15 230 722522 3574.22 742 736 201.9
C 5 250 377119 1863.81 742 736 201.9
D 8 129 5574201 28550.33 679 648 195.2
D 2 249 286332 1463.41 679 648 195.2
D 5 113 175767 897.04 679 648 195.2

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