ASTROSAT CZTI

Data Quality Report

Orbit 19878

Creation date: 2024-06-27T18:08:14.213789
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/AS1T03_118T01_9000002962_19878cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19878cztM0_level2_quad_clean.evt
Size (bytes)606,047,040120,591,360
Size578.0 MB 115.0 MB
Events in quadrant A5,094,666780,143
Events in quadrant B4,046,831796,428
Events in quadrant C4,258,948758,495
Events in quadrant D4,391,328740,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204832
B0173902
C0180662
D0187472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82884044.874517%
B82892613.148751%
C82893434.138014%
D82892422.919532%

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 8908 8289 185 185 2.08% 2.23%
B 8909 8290 1 1 0.01% 0.01%
C 8909 8290 25 25 0.28% 0.30%
D 8909 8289 61 61 0.68% 0.74%

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 14 238 822761 3910.05 1026 1004 210.2
A 5 16 324620 1539.82 1026 1004 210.2
A 3 137 8837 37.27 1026 1004 210.2
B 12 111 24935 120.6 1023 993 198.5
B 11 111 22459 108.12 1023 993 198.5
B 14 111 19709 94.27 1023 993 198.5
C 9 221 236152 1010.83 989 993 232.6
C 14 238 150864 644.22 989 993 232.6
C 7 220 10886 42.52 989 993 232.6
D 1 52 284593 1157.42 1007 981 245.0
D 2 184 204732 831.5 1007 981 245.0
D 7 238 46603 186.18 1007 981 245.0

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