ASTROSAT CZTI

Data Quality Report

Orbit 45826

Creation date: 2024-06-27T23:16:37.104985
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/AS1T05_185T01_9000006128_45826cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45826cztM0_level2_quad_clean.evt
Size (bytes)831,980,160117,498,240
Size793.4 MB 112.1 MB
Events in quadrant A9,650,808674,513
Events in quadrant B8,555,299788,630
Events in quadrant C3,748,748861,570
Events in quadrant D8,224,478677,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336963
B0310661
C0169611
D0299941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7989195324.446113%
B7990128516.082603%
C7990941.176471%
D7990117114.655820%

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 8004 7990 1373 1373 17.15% 17.18%
B 8005 7991 607 607 7.58% 7.60%
C 8005 7991 4 4 0.05% 0.05%
D 8005 7991 881 881 11.01% 11.02%

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 10 83 2938521 16531.06 847 825 177.7
A 15 14 2411184 13563.62 847 825 177.7
A 7 3 818269 4599.94 847 825 177.7
B 3 112 4353123 24948.91 883 856 174.4
B 4 171 332583 1901.59 883 856 174.4
B 0 171 112011 637.18 883 856 174.4
C 1 3 84716 391.57 911 917 214.0
C 3 233 57192 262.96 911 917 214.0
C 12 250 48176 220.83 911 917 214.0
D 12 2 2218124 10445.68 843 815 212.3
D 11 241 1226234 5772.92 843 815 212.3
D 1 52 375971 1767.35 843 815 212.3

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