ASTROSAT CZTI

Data Quality Report

Orbit 52594

Creation date: 2025-06-18T23:06:28.927082
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/AS1C09_011T06_9000006478_52594cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52594cztM0_level2_quad_clean.evt
Size (bytes)837,483,84074,208,960
Size798.7 MB 70.8 MB
Events in quadrant A3,323,906604,520
Events in quadrant B3,971,471618,259
Events in quadrant C9,807,793347,755
Events in quadrant D13,409,721236,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142861
B0163321
C0335591
D0441831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6303911.443757%
B63032544.029827%
C6303274943.614152%
D6302401363.678197%

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 7163 6303 56 56 0.78% 0.89%
B 7163 6303 157 157 2.19% 2.49%
C 7162 6302 2448 2448 34.18% 38.84%
D 7161 6301 4211 4211 58.80% 66.83%

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 8 9 136045 805.07 665 648 168.2
A 4 249 114691 678.1 665 648 168.2
A 15 174 108439 640.93 665 648 168.2
B 4 81 317588 2318.9 646 625 136.7
B 10 44 237765 1734.92 646 625 136.7
B 10 128 226146 1649.91 646 625 136.7
C 15 248 7385624 55285.81 480 477 133.6
C 13 3 207332 1548.53 480 477 133.6
C 12 249 98787 735.96 480 477 133.6
D 15 125 4449925 31804.08 476 454 139.9
D 6 42 2684071 19182.05 476 454 139.9
D 8 176 1291118 9225.45 476 454 139.9

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