ASTROSAT CZTI

Data Quality Report

Orbit 57569

Creation date: 2026-05-19T17:28:24.046603
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_57569cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57569cztM0_level2_quad_clean.evt
Size (bytes)478,431,360103,947,840
Size456.3 MB 99.1 MB
Events in quadrant A3,697,295689,682
Events in quadrant B3,789,771729,993
Events in quadrant C4,080,852658,831
Events in quadrant D5,600,587583,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159782
B0162112
C0170283
D0213472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6968861.234214%
B69692753.946047%
C69681972.827210%
D69685868.409874%

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 8013 6969 1 1 0.01% 0.01%
B 8014 6970 90 90 1.12% 1.29%
C 8013 6969 91 91 1.14% 1.31%
D 8013 6969 496 496 6.19% 7.12%

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 0 12 611887 3207.44 772 752 190.5
A 12 3 25429 129.51 772 752 190.5
A 3 14 20869 105.58 772 752 190.5
B 5 185 553220 3480.85 749 719 158.7
B 4 201 40142 248.37 749 719 158.7
B 10 247 35102 216.62 749 719 158.7
C 15 224 887939 4390.58 744 735 202.1
C 14 254 92657 454.9 744 735 202.1
C 12 254 55095 269.02 744 735 202.1
D 15 142 895754 4359.95 726 692 205.3
D 8 160 705863 3434.97 726 692 205.3
D 8 240 395089 1921.15 726 692 205.3

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