ASTROSAT CZTI

Data Quality Report

Orbit 58896

Creation date: 2026-08-17T11:55:55.372776
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_004T07_9000006598_58896cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58896cztM0_level2_quad_clean.evt
Size (bytes)917,812,800101,044,800
Size875.3 MB 96.4 MB
Events in quadrant A12,344,533442,265
Events in quadrant B4,483,815815,002
Events in quadrant C5,666,113687,677
Events in quadrant D10,870,417566,020

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421110
B0188280
C0223980
D0378710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7886358645.472990%
B78861622.054273%
C78866828.648237%
D7887156119.792063%

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 7886 7886 3189 3189 40.44% 40.44%
B 7886 7886 63 63 0.80% 0.80%
C 7886 7886 532 532 6.75% 6.75%
D 7887 7887 1340 1340 16.99% 16.99%

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 0 24 8363121 47622.8 703 684 175.6
A 14 238 923344 5254.41 703 684 175.6
A 3 14 159799 906.14 703 684 175.6
B 4 171 283852 1507.74 873 839 187.7
B 15 32 212734 1128.86 873 839 187.7
B 4 201 83049 437.97 873 839 187.7
C 4 5 991898 4320.37 837 828 229.4
C 12 252 959311 4178.31 837 828 229.4
C 12 249 162537 704.94 837 828 229.4
D 12 110 7129837 31705.84 799 762 224.9
D 11 129 177698 786.9 799 762 224.9
D 2 249 107818 476.12 799 762 224.9

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