ASTROSAT CZTI

Data Quality Report

Orbit 58132

Creation date: 2026-06-29T16:07:28.309649
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_58132cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58132cztM0_level2_quad_clean.evt
Size (bytes)455,604,48098,461,440
Size434.5 MB 93.9 MB
Events in quadrant A3,202,113659,627
Events in quadrant B4,416,626689,493
Events in quadrant C3,289,430624,158
Events in quadrant D5,440,478544,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138822
B0175192
C0145392
D0206172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6643811.219329%
B66433264.907421%
C6643971.460184%
D66436229.363240%

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 7663 6644 1 1 0.01% 0.02%
B 7663 6643 104 104 1.36% 1.57%
C 7663 6644 20 20 0.26% 0.30%
D 7663 6644 471 471 6.15% 7.09%

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 11 3 210426 1120.14 757 738 187.2
A 10 251 35569 186.07 757 738 187.2
A 4 3 13127 66.18 757 738 187.2
B 10 128 1117407 7119.68 735 708 156.8
B 5 185 213006 1353.54 735 708 156.8
B 7 252 32726 204.14 735 708 156.8
C 12 252 245383 1217.78 733 725 200.9
C 13 3 111815 552.95 733 725 200.9
C 14 246 20328 97.57 733 725 200.9
D 12 110 1279160 6480.91 703 672 197.3
D 8 160 908065 4599.75 703 672 197.3
D 3 224 230861 1166.87 703 672 197.3

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