ASTROSAT CZTI

Data Quality Report

Orbit 57906

Creation date: 2026-06-11T10:44:53.680291
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_125T11_9000006582_57906cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57906cztM0_level2_quad_clean.evt
Size (bytes)1,688,094,720410,823,360
Size1.6 GB 391.8 MB
Events in quadrant A11,903,4242,742,678
Events in quadrant B15,704,0232,869,552
Events in quadrant C18,930,9552,479,800
Events in quadrant D13,761,7092,405,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0575734
B0672604
C0767834
D0623774

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28251930.329192%
B282529453.344896%
C2825115265.401579%
D282514031.426498%

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 32296 28255 3 3 0.01% 0.01%
B 32297 28256 445 445 1.38% 1.57%
C 32296 28255 1199 1199 3.71% 4.24%
D 32296 28255 361 361 1.12% 1.28%

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 7 64 190350 254.25 3018 2944 737.1
A 3 137 36956 46.14 3018 2944 737.1
A 3 245 31507 38.75 3018 2944 737.1
B 10 128 2845079 4594.8 2956 2842 618.6
B 7 252 261919 418.83 2956 2842 618.6
B 2 249 158014 250.85 2956 2842 618.6
C 15 224 6496870 8447.99 2854 2823 768.7
C 12 252 497007 642.88 2854 2823 768.7
C 14 254 176648 226.13 2854 2823 768.7
D 8 160 989021 1225.52 2895 2762 804.8
D 2 31 255948 314.61 2895 2762 804.8
D 8 240 247355 303.93 2895 2762 804.8

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