ASTROSAT CZTI

Data Quality Report

Orbit 58438

Creation date: 2026-07-17T04:09:14.663123
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_045T01_9000006590_58438cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58438cztM0_level2_quad_clean.evt
Size (bytes)405,535,68096,246,720
Size386.7 MB 91.8 MB
Events in quadrant A3,806,197625,785
Events in quadrant B3,691,979674,951
Events in quadrant C3,439,352605,277
Events in quadrant D3,576,647562,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158242
B0154445
C0147082
D0151322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63931672.612232%
B63921712.675219%
C6392811.267209%
D63921322.065081%

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 7568 6394 133 133 1.76% 2.08%
B 7567 6393 119 119 1.57% 1.86%
C 7567 6393 86 86 1.14% 1.35%
D 7567 6393 116 116 1.53% 1.81%

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 12 114 701197 4023.97 701 684 174.1
A 7 64 234537 1343.32 701 684 174.1
A 10 251 42762 241.71 701 684 174.1
B 4 201 230840 1529.36 698 673 150.5
B 5 172 224954 1490.25 698 673 150.5
B 5 185 113101 747.03 698 673 150.5
C 6 223 252542 1329.45 683 677 189.4
C 14 254 124586 654.05 683 677 189.4
C 12 250 75747 396.25 683 677 189.4
D 8 240 640863 3275.21 676 646 195.5
D 5 32 67307 341.02 676 646 195.5
D 10 86 49509 249.97 676 646 195.5

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