ASTROSAT CZTI

Data Quality Report

Orbit 23902

Creation date: 2024-06-27T18:59:56.419199
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/AS1A07_142T01_9000003540_23902cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23902cztM0_level2_quad_clean.evt
Size (bytes)529,905,60099,480,960
Size505.4 MB 94.9 MB
Events in quadrant A3,596,736638,913
Events in quadrant B3,753,592643,308
Events in quadrant C3,711,700611,774
Events in quadrant D4,479,306599,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154752
B0157792
C0156372
D0180412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7473500.669075%
B74731011.351532%
C74731502.007226%
D74722283.051392%

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 7698 7474 0 0 0.00% 0.00%
B 7698 7474 4 4 0.05% 0.05%
C 7698 7474 5 5 0.06% 0.07%
D 7697 7473 127 127 1.65% 1.70%

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 13 254 12680 62.1 932 912 189.5
A 3 137 8168 38.29 932 912 189.5
A 0 226 8081 37.83 932 912 189.5
B 0 189 28073 152.75 934 912 177.8
B 12 111 21033 113.16 934 912 177.8
B 0 228 19027 101.88 934 912 177.8
C 14 238 139424 660.15 892 899 209.8
C 0 10 41177 191.95 892 899 209.8
C 10 9 40731 189.82 892 899 209.8
D 12 218 601809 2751.96 894 866 218.4
D 7 238 321932 1470.29 894 866 218.4
D 8 195 39081 175.0 894 866 218.4

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