ASTROSAT CZTI

Data Quality Report

Orbit 36095

Creation date: 2022-08-10T09:15:56.962906
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/AS1T04_069T01_9000005158_36095cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36095cztM0_level2_quad_clean.evt
Size (bytes)700,778,880119,888,640
Size668.3 MB 114.3 MB
Events in quadrant A4,225,553778,517
Events in quadrant B4,351,490774,614
Events in quadrant C4,316,923753,132
Events in quadrant D7,722,826703,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184643
B0187802
C0185352
D0289312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A895980.089296%
B8959330.368345%
C8959220.245563%
D895995110.615024%

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 11615 8961 0 0 0.00% 0.00%
B 11615 8961 18 18 0.15% 0.20%
C 11615 8961 9 9 0.08% 0.10%
D 11615 8960 779 779 6.71% 8.69%

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 233993 1142.27 1007 985 204.0
A 9 143 31730 150.72 1007 985 204.0
A 12 189 21161 98.91 1007 985 204.0
B 5 172 130328 666.94 999 972 194.0
B 0 190 93132 475.16 999 972 194.0
B 0 229 92642 472.64 999 972 194.0
C 15 214 394153 1751.33 966 973 224.5
C 0 10 125489 554.63 966 973 224.5
C 15 159 18741 79.14 966 973 224.5
D 1 52 2828246 12572.46 906 879 224.9
D 12 6 437934 1943.45 906 879 224.9
D 13 249 213381 944.93 906 879 224.9

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