ASTROSAT CZTI

Data Quality Report

Orbit 57296

Creation date: 2026-05-01T09:16:49.772993
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_049T03_9000006570_57296cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57296cztM0_level2_quad_clean.evt
Size (bytes)620,409,60099,979,200
Size591.7 MB 95.3 MB
Events in quadrant A5,097,430657,744
Events in quadrant B4,150,267694,737
Events in quadrant C6,247,544587,318
Events in quadrant D6,843,723525,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206802
B0182081
C0241101
D0260521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80831992.461957%
B80841511.867887%
C80844625.714993%
D80847979.858981%

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 8698 8369 154 154 1.77% 1.84%
B 8699 8370 22 22 0.25% 0.26%
C 8698 8365 353 353 4.06% 4.22%
D 8699 8370 613 613 7.05% 7.32%

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 887722 4119.97 879 854 215.3
A 8 4 527859 2448.21 879 854 215.3
A 3 14 185848 859.39 879 854 215.3
B 5 185 442436 2356.45 874 840 187.4
B 5 172 75578 398.82 874 840 187.4
B 10 16 46495 243.62 874 840 187.4
C 15 224 2117307 9390.69 841 833 225.4
C 6 223 239592 1059.36 841 833 225.4
C 14 254 156991 692.86 841 833 225.4
D 3 224 2588738 11383.79 812 775 227.3
D 6 159 426249 1871.55 812 775 227.3
D 7 96 128674 562.59 812 775 227.3

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