ASTROSAT CZTI

Data Quality Report

Orbit 54971

Creation date: 2025-11-25T23:50:24.333676
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_014T01_9000006528_54971cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54971cztM0_level2_quad_clean.evt
Size (bytes)886,723,20091,434,240
Size845.6 MB 87.2 MB
Events in quadrant A3,545,784720,308
Events in quadrant B3,460,496778,597
Events in quadrant C7,219,073590,828
Events in quadrant D18,000,042142,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161800
B0160640
C0268540
D0587951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7706130.168700%
B7706150.194654%
C7707129516.802906%
D7706624581.040747%

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 7706 7706 11 11 0.14% 0.14%
B 7706 7706 10 10 0.13% 0.13%
C 7706 7706 946 946 12.28% 12.28%
D 7706 7706 5850 5850 75.91% 75.91%

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 4 249 104796 507.8 836 813 204.8
A 4 3 81349 393.3 836 813 204.8
A 13 248 48625 233.49 836 813 204.8
B 5 185 51591 283.9 825 794 178.9
B 0 245 38207 209.1 825 794 178.9
B 0 182 34307 187.3 825 794 178.9
C 4 5 3864737 18904.01 745 740 204.4
C 12 252 170732 831.66 745 740 204.4
C 14 254 84454 409.56 745 740 204.4
D 15 94 14577707 121176.86 413 393 120.3
D 2 249 965565 8023.19 413 393 120.3
D 14 52 354831 2946.34 413 393 120.3

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