ASTROSAT CZTI

Data Quality Report

Orbit 56885

Creation date: 2026-04-03T17:08:26.005280
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_083T14_9000006564_56885cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56885cztM0_level2_quad_clean.evt
Size (bytes)455,071,68092,223,360
Size434.0 MB 88.0 MB
Events in quadrant A3,212,763618,945
Events in quadrant B3,566,886649,837
Events in quadrant C2,978,446594,961
Events in quadrant D6,596,524488,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141021
B0151061
C0133611
D0238041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63071241.966069%
B63072754.360235%
C6308610.967026%
D6308102816.296766%

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 7417 6308 34 34 0.46% 0.54%
B 7416 6307 154 154 2.08% 2.44%
C 7418 6309 12 12 0.16% 0.19%
D 7418 6309 1041 1041 14.03% 16.50%

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 10 251 340235 2019.06 680 663 168.2
A 3 14 159132 942.24 680 663 168.2
A 7 64 67281 396.1 680 663 168.2
B 5 185 495592 3545.73 654 630 139.6
B 10 16 205377 1466.73 654 630 139.6
B 10 47 61561 436.49 654 630 139.6
C 13 3 118234 654.0 659 652 179.8
C 7 220 64435 354.76 659 652 179.8
C 11 244 46738 256.33 659 652 179.8
D 8 160 1743468 10016.74 617 590 174.0
D 2 249 771817 4432.43 617 590 174.0
D 8 240 618924 3553.72 617 590 174.0

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