ASTROSAT CZTI

Data Quality Report

Orbit 56575

Creation date: 2026-03-13T21:33:57.438239
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_56575cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56575cztM0_level2_quad_clean.evt
Size (bytes)393,079,68086,238,720
Size374.9 MB 82.2 MB
Events in quadrant A2,997,060567,651
Events in quadrant B2,784,906607,261
Events in quadrant C3,353,944536,215
Events in quadrant D4,946,963480,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131961
B0127451
C0145441
D0188801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011801.330893%
B6012671.114438%
C60121111.846307%
D60124697.801065%

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 6936 6012 56 56 0.81% 0.93%
B 6937 6013 30 30 0.43% 0.50%
C 6937 6013 90 90 1.30% 1.50%
D 6937 6013 433 433 6.24% 7.20%

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 285062 1792.21 637 621 158.7
A 7 64 94468 591.31 637 621 158.7
A 0 12 28070 172.95 637 621 158.7
B 0 173 70218 509.36 634 611 136.7
B 4 141 37179 267.59 634 611 136.7
B 0 245 33818 243.0 634 611 136.7
C 6 223 349868 2083.2 609 603 167.7
C 9 38 173217 1029.56 609 603 167.7
C 13 3 169915 1009.87 609 603 167.7
D 8 129 831344 4855.67 595 567 171.1
D 2 249 744983 4350.91 595 567 171.1
D 6 239 474770 2771.59 595 567 171.1

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