ASTROSAT CZTI

Data Quality Report

Orbit 58104

Creation date: 2026-06-24T17:32:43.541641
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_042T02_9000006586_58104cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58104cztM0_level2_quad_clean.evt
Size (bytes)903,110,40066,623,040
Size861.3 MB 63.5 MB
Events in quadrant A3,687,080643,851
Events in quadrant B11,972,980251,338
Events in quadrant C3,234,990618,820
Events in quadrant D14,042,80060,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152201
B0399001
C0138661
D0459281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63422083.279722%
B6343438769.162857%
C63421011.592558%
D6342583191.942605%

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 7442 6342 95 95 1.28% 1.50%
B 7443 6343 3863 3863 51.90% 60.90%
C 7442 6342 25 25 0.34% 0.39%
D 7441 6341 5350 5350 71.90% 84.37%

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 10 251 711375 3869.09 741 720 183.7
A 6 195 45071 241.46 741 720 183.7
A 3 61 20455 107.45 741 720 183.7
B 5 172 8050664 70405.97 529 509 114.3
B 10 128 1569272 13720.27 529 509 114.3
B 5 185 57535 498.74 529 509 114.3
C 12 252 260728 1317.76 718 710 197.3
C 6 223 54713 273.68 718 710 197.3
C 9 38 40375 201.02 718 710 197.3
D 12 110 12058115 106129.72 396 377 113.6
D 8 160 200789 1763.99 396 377 113.6
D 2 249 95250 835.05 396 377 113.6

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