ASTROSAT CZTI

Data Quality Report

Orbit 14261

Creation date: 2024-06-27T16:52:38.074797
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/AS1G08_014T01_9000002104_14261cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14261cztM0_level2_quad_clean.evt
Size (bytes)652,322,88078,661,440
Size622.1 MB 75.0 MB
Events in quadrant A3,716,754486,748
Events in quadrant B4,837,486481,525
Events in quadrant C4,112,719452,737
Events in quadrant D6,586,976445,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156073
B0191632
C0162422
D0246632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74111562.104979%
B74115387.259479%
C74111111.497774%
D74117319.863716%

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 7712 7413 0 0 0.00% 0.00%
B 7712 7413 252 252 3.27% 3.40%
C 7712 7413 0 0 0.00% 0.00%
D 7712 7413 459 459 5.95% 6.19%

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 12 189 109145 573.37 925 905 188.8
A 8 15 46622 242.17 925 905 188.8
A 0 226 8245 38.88 925 905 188.8
B 0 182 701063 4037.04 896 871 173.4
B 10 245 292868 1683.54 896 871 173.4
B 0 229 226828 1302.78 896 871 173.4
C 3 233 640083 3098.05 884 888 206.3
C 8 128 12166 54.66 884 888 206.3
C 8 112 6724 28.29 884 888 206.3
D 13 122 1866148 9013.57 866 845 206.9
D 5 222 601665 2903.3 866 845 206.9
D 8 195 459334 2215.52 866 845 206.9

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