ASTROSAT CZTI

Data Quality Report

Orbit 56664

Creation date: 2026-03-20T11:05:38.555944
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_083T06_9000006558_56664cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56664cztM0_level2_quad_clean.evt
Size (bytes)471,588,48084,087,360
Size449.7 MB 80.2 MB
Events in quadrant A2,721,761562,911
Events in quadrant B2,682,361607,994
Events in quadrant C4,317,723526,006
Events in quadrant D7,274,954435,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124131
B0123291
C0169981
D0257541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5919510.861632%
B5920350.591216%
C59201903.209459%
D5920105517.820946%

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 6939 5919 14 14 0.20% 0.24%
B 6940 5920 4 4 0.06% 0.07%
C 6940 5921 186 186 2.68% 3.14%
D 6939 5919 1204 1204 17.35% 20.34%

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 4 249 101917 649.81 632 616 155.9
A 0 12 40931 258.61 632 616 155.9
A 7 14 29466 185.06 632 616 155.9
B 0 245 58750 434.14 623 598 133.9
B 0 213 26336 192.15 623 598 133.9
B 5 185 22134 160.78 623 598 133.9
C 13 3 691309 4182.47 598 593 165.1
C 15 205 427033 2582.21 598 593 165.1
C 9 38 301098 1819.64 598 593 165.1
D 10 199 2590416 15881.5 574 548 163.1
D 2 249 1573701 9646.84 574 548 163.1
D 12 2 255999 1566.47 574 548 163.1

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