ASTROSAT CZTI

Data Quality Report

Orbit 55590

Creation date: 2026-01-06T15:23:01.643057
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_021T06_9000006538_55590cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55590cztM0_level2_quad_clean.evt
Size (bytes)366,082,56085,904,640
Size349.1 MB 81.9 MB
Events in quadrant A3,364,942553,984
Events in quadrant B2,646,999606,405
Events in quadrant C3,702,399521,182
Events in quadrant D3,372,174502,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145251
B0125511
C0154961
D0144971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59651833.067896%
B5966751.257124%
C59662373.972511%
D5966931.558833%

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 7055 5966 109 109 1.55% 1.83%
B 7056 5967 15 15 0.21% 0.25%
C 7056 5967 163 163 2.31% 2.73%
D 7056 5967 84 84 1.19% 1.41%

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 577152 3839.66 607 592 150.2
A 8 249 301547 2004.24 607 592 150.2
A 0 8 70046 462.54 607 592 150.2
B 5 172 118224 914.7 602 580 128.6
B 10 247 53505 411.5 602 580 128.6
B 4 169 47681 366.22 602 580 128.6
C 9 38 651945 4114.06 578 572 158.3
C 12 252 327647 2065.8 578 572 158.3
C 15 199 122492 770.04 578 572 158.3
D 11 129 424975 2562.3 585 557 165.6
D 2 62 216252 1302.2 585 557 165.6
D 6 42 174888 1052.47 585 557 165.6

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