ASTROSAT CZTI

Data Quality Report

Orbit 57610

Creation date: 2026-05-22T11:42:27.034235
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_070T08_9000006576_57610cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57610cztM0_level2_quad_clean.evt
Size (bytes)427,878,72092,139,840
Size408.1 MB 87.9 MB
Events in quadrant A2,961,653610,681
Events in quadrant B3,340,607654,703
Events in quadrant C3,985,000571,863
Events in quadrant D5,036,289491,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135202
B0145562
C0163732
D0195364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617520.785855%
B66171191.798398%
C66171552.342451%
D661668810.399033%

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 8032 6892 1 1 0.01% 0.01%
B 8032 6892 37 37 0.46% 0.54%
C 8032 6893 95 95 1.18% 1.38%
D 8031 6891 611 611 7.61% 8.87%

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 3 14 59681 323.28 743 724 182.4
A 4 3 27693 147.88 743 724 182.4
A 3 128 9886 50.24 743 724 182.4
B 0 63 122602 784.08 733 705 155.5
B 10 247 112228 717.35 733 705 155.5
B 5 185 99552 635.82 733 705 155.5
C 15 224 743190 3770.81 726 718 196.9
C 9 38 153702 776.96 726 718 196.9
C 12 252 151846 767.53 726 718 196.9
D 15 142 1592329 8382.31 679 649 189.9
D 8 240 316251 1662.06 679 649 189.9
D 2 249 262453 1378.75 679 649 189.9

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