ASTROSAT CZTI

Data Quality Report

Orbit 56531

Creation date: 2026-03-10T22:28:52.636802
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_060T01_9000006556_56531cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56531cztM0_level2_quad_clean.evt
Size (bytes)475,876,80084,072,960
Size453.8 MB 80.2 MB
Events in quadrant A4,116,791542,579
Events in quadrant B6,495,776536,067
Events in quadrant C3,162,715538,798
Events in quadrant D3,370,052505,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162063
B0234851
C0139201
D0143911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60453585.922250%
B6045109018.031431%
C60461462.414820%
D60461412.332120%

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 6910 6046 333 333 4.82% 5.51%
B 6910 6046 628 628 9.09% 10.39%
C 6911 6047 134 134 1.94% 2.22%
D 6911 6047 137 137 1.98% 2.27%

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 4 95 1091948 6793.18 643 626 160.6
A 3 14 309916 1925.24 643 626 160.6
A 4 3 71883 443.56 643 626 160.6
B 4 206 2506292 19022.33 609 589 131.7
B 4 171 592828 4496.05 609 589 131.7
B 10 44 231794 1755.22 609 589 131.7
C 12 252 600148 3492.55 621 617 171.7
C 12 254 34866 199.52 621 617 171.7
C 14 254 27759 158.11 621 617 171.7
D 2 120 249055 1391.23 620 593 178.6
D 8 129 125441 699.07 620 593 178.6
D 8 240 100705 560.56 620 593 178.6

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