ASTROSAT CZTI

Data Quality Report

Orbit 54507

Creation date: 2025-10-25T17:53:42.794346
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_127T09_9000006520_54507cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54507cztM0_level2_quad_clean.evt
Size (bytes)458,092,800114,036,480
Size436.9 MB 108.8 MB
Events in quadrant A3,650,488745,688
Events in quadrant B3,877,224799,867
Events in quadrant C4,351,585693,740
Events in quadrant D4,456,363658,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166600
B0173920
C0189890
D0188993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7991440.550619%
B7991360.450507%
C79921942.427427%
D79911511.889626%

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 7991 7991 35 35 0.44% 0.44%
B 7991 7991 17 17 0.21% 0.21%
C 7992 7992 145 145 1.81% 1.81%
D 7991 7991 127 127 1.59% 1.59%

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 11 3 100086 469.56 854 833 211.4
A 5 241 94426 442.78 854 833 211.4
A 4 3 61722 288.06 854 833 211.4
B 5 172 281326 1538.16 846 813 182.4
B 0 213 133480 727.46 846 813 182.4
B 5 185 55189 298.16 846 813 182.4
C 15 209 426114 1884.88 820 813 225.6
C 10 22 414342 1832.71 820 813 225.6
C 1 16 84825 372.33 820 813 225.6
D 3 12 458309 1960.99 820 783 233.3
D 10 181 276420 1181.4 820 783 233.3
D 2 172 128604 547.85 820 783 233.3

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