ASTROSAT CZTI

Data Quality Report

Orbit 56698

Creation date: 2026-03-22T03:27:19.232609
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_083T06_9000006558_56698cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56698cztM0_level2_quad_clean.evt
Size (bytes)596,658,24089,354,880
Size569.0 MB 85.2 MB
Events in quadrant A4,384,440613,802
Events in quadrant B3,910,763648,819
Events in quadrant C8,361,038425,065
Events in quadrant D4,910,105550,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180622
B0167062
C0296842
D0193962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66944396.558112%
B66943975.930684%
C6694201730.131461%
D66943665.467583%

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 7594 6695 356 356 4.69% 5.32%
B 7594 6695 212 212 2.79% 3.17%
C 7593 6694 1686 1686 22.20% 25.19%
D 7594 6695 407 407 5.36% 6.08%

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 1146436 6778.43 685 665 169.0
A 8 26 193995 1143.75 685 665 169.0
A 4 249 92239 541.75 685 665 169.0
B 4 236 636027 4341.73 685 661 146.3
B 0 63 136719 929.74 685 661 146.3
B 8 128 99828 677.65 685 661 146.3
C 15 230 4376727 27764.96 567 560 157.6
C 13 3 1107326 7021.97 567 560 157.6
C 15 215 364265 2307.56 567 560 157.6
D 10 199 775654 4137.9 657 626 187.3
D 0 160 557410 2972.69 657 626 187.3
D 6 239 356548 1900.28 657 626 187.3

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