ASTROSAT CZTI

Data Quality Report

Orbit 55343

Creation date: 2025-12-20T22:56:51.034545
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_009T01_9000006534_55343cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55343cztM0_level2_quad_clean.evt
Size (bytes)454,089,60084,536,640
Size433.1 MB 80.6 MB
Events in quadrant A6,910,007458,860
Events in quadrant B2,917,735618,632
Events in quadrant C3,313,523543,788
Events in quadrant D3,205,269523,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245751
B0128721
C0142851
D0138093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5942139223.426456%
B5943951.598519%
C59431983.331651%
D59421252.103669%

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 7052 5943 1324 1324 18.77% 22.28%
B 7053 5944 18 18 0.26% 0.30%
C 7053 5944 129 129 1.83% 2.17%
D 7052 5943 74 74 1.05% 1.25%

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 12 115 3667049 26842.65 553 540 136.6
A 3 78 852683 6238.57 553 540 136.6
A 0 8 170876 1247.04 553 540 136.6
B 0 199 193119 1432.78 624 602 134.4
B 10 247 75470 557.19 624 602 134.4
B 0 182 69298 511.26 624 602 134.4
C 13 3 478881 2834.63 612 606 168.7
C 12 252 153046 903.48 612 606 168.7
C 15 147 151373 893.56 612 606 168.7
D 11 129 252348 1449.59 619 593 173.7
D 2 31 167725 962.34 619 593 173.7
D 2 62 106570 610.21 619 593 173.7

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