ASTROSAT CZTI

Data Quality Report

Orbit 54228

Creation date: 2025-10-06T23:10:59.221686
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/AS1C09_004T08_9000006514_54228cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54228cztM0_level2_quad_clean.evt
Size (bytes)848,675,52077,647,680
Size809.4 MB 74.1 MB
Events in quadrant A6,040,852569,768
Events in quadrant B3,916,827692,206
Events in quadrant C5,430,154547,618
Events in quadrant D15,499,80167,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228061
B0164321
C0210231
D0506641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796105515.523838%
B67971932.839488%
C679681111.933490%
D6796603488.787522%

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 7561 6797 761 761 10.06% 11.20%
B 7562 6798 95 95 1.26% 1.40%
C 7561 6797 621 621 8.21% 9.14%
D 7560 6796 4996 4996 66.08% 73.51%

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 12 17 2029537 12296.52 664 648 165.0
A 7 29 625914 3789.56 664 648 165.0
A 12 194 261697 1582.14 664 648 165.0
B 4 171 304643 2046.3 699 676 148.5
B 5 236 275492 1850.06 699 676 148.5
B 8 234 222315 1492.07 699 676 148.5
C 1 241 826024 4591.79 652 644 179.8
C 15 215 789543 4388.83 652 644 179.8
C 15 216 359004 1993.64 652 644 179.8
D 8 176 14372487 284768.04 172 165 50.5
D 3 12 218891 4333.76 172 165 50.5
D 2 153 38469 758.94 172 165 50.5

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