ASTROSAT CZTI

Data Quality Report

Orbit 58784

Creation date: 2026-08-09T15:34:31.933435
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_106T01_9000006596_58784cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58784cztM0_level2_quad_clean.evt
Size (bytes)575,055,36088,185,600
Size548.4 MB 84.1 MB
Events in quadrant A3,946,327599,484
Events in quadrant B3,246,605641,350
Events in quadrant C3,574,890568,280
Events in quadrant D10,034,000424,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016222225
B014084193
C015253165
D034535355

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01302
B01304
C01280
D01304

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62561081.726343%
B62541472.350496%
C62642203.512133%
D6250167726.832000%

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 7190 6278 15 15 0.21% 0.24%
B 7191 6278 48 48 0.67% 0.76%
C 7185 6291 137 137 1.91% 2.18%
D 7172 6269 1472 1472 20.52% 23.48%

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 1073483 6157.78 700 681 174.2
A 15 233 85823 488.71 700 681 174.2
A 3 245 18051 99.7 700 681 174.2
B 4 171 168916 1140.24 690 665 147.6
B 4 201 84335 567.03 690 665 147.6
B 10 247 44246 295.35 690 665 147.6
C 4 5 501836 2697.44 673 667 185.8
C 13 3 135911 727.92 673 667 185.8
C 6 223 132967 712.08 673 667 185.8
D 12 110 4039158 23072.58 612 585 175.0
D 11 129 3267720 18665.31 612 585 175.0
D 2 249 116476 662.09 612 585 175.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct