ASTROSAT CZTI

Data Quality Report

Orbit 57688

Creation date: 2026-05-27T18:15:20.934007
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_125T09_9000006578_57688cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57688cztM0_level2_quad_clean.evt
Size (bytes)743,515,20098,383,680
Size709.1 MB 93.8 MB
Events in quadrant A3,822,774695,556
Events in quadrant B5,633,976704,012
Events in quadrant C8,115,628571,247
Events in quadrant D9,388,208502,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160850
B0219830
C0292040
D0329340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7259220.303072%
B72606799.352617%
C7260129617.851240%
D7260167123.016529%

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 7259 7259 3 3 0.04% 0.04%
B 7260 7260 375 375 5.17% 5.17%
C 7260 7260 1157 1157 15.94% 15.94%
D 7260 7260 1694 1694 23.33% 23.33%

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 641419 3297.61 790 769 194.3
A 3 245 28805 144.31 790 769 194.3
A 8 9 20064 99.32 790 769 194.3
B 5 185 2278213 13974.22 758 728 163.0
B 10 247 224807 1374.91 758 728 163.0
B 0 245 29677 177.63 758 728 163.0
C 12 254 2191462 11151.67 724 716 196.5
C 12 249 1551550 7894.29 724 716 196.5
C 15 224 1224521 6229.6 724 716 196.5
D 8 240 3556467 18141.59 694 662 196.0
D 8 160 2600876 13266.2 694 662 196.0
D 13 138 169288 860.32 694 662 196.0

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