ASTROSAT CZTI

Data Quality Report

Orbit 52264

Creation date: 2025-07-21T19:34:20.453837
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_011T05_9000006474_52264cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52264cztM0_level2_quad_clean.evt
Size (bytes)726,667,20066,703,680
Size693.0 MB 63.6 MB
Events in quadrant A3,369,614554,563
Events in quadrant B6,142,140488,976
Events in quadrant C12,769,39985,829
Events in quadrant D4,169,496486,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139131
B0222241
C0418391
D0163841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57641532.654407%
B5765130922.705984%
C5765504587.510841%
D57652804.856895%

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 6884 5765 73 73 1.06% 1.27%
B 6885 5766 777 777 11.29% 13.48%
C 6884 5764 4188 4188 60.84% 72.66%
D 6885 5766 214 214 3.11% 3.71%

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 15 250 174595 1146.88 607 592 151.7
A 11 3 151884 997.19 607 592 151.7
A 4 249 122315 802.3 607 592 151.7
B 12 32 2262592 19749.31 540 522 114.5
B 10 254 563851 4918.22 540 522 114.5
B 1 255 211400 1841.1 540 522 114.5
C 15 158 9079178 117848.11 277 274 77.0
C 15 224 1165480 15124.88 277 274 77.0
C 15 178 503266 6529.05 277 274 77.0
D 8 176 621034 3779.18 578 552 164.2
D 11 176 414979 2524.16 578 552 164.2
D 3 12 256312 1557.76 578 552 164.2

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