ASTROSAT CZTI

Data Quality Report

Orbit 32356

Creation date: 2024-06-27T20:39:17.816249
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/AS1A09_131T01_9000004702_32356cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32356cztM0_level2_quad_clean.evt
Size (bytes)716,031,360143,216,640
Size682.9 MB 136.6 MB
Events in quadrant A3,658,195975,513
Events in quadrant B6,666,675961,976
Events in quadrant C5,167,369938,505
Events in quadrant D5,663,026916,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163163
B0258382
C0206182
D0220782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7846540.688249%
B78465446.933469%
C78466598.399184%
D78463804.843232%

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 8721 7848 0 0 0.00% 0.00%
B 8721 7848 137 137 1.57% 1.75%
C 8721 7848 372 372 4.27% 4.74%
D 8721 7847 184 184 2.11% 2.34%

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 6 20719 104.07 940 920 190.2
A 13 254 16265 80.66 940 920 190.2
A 3 137 9635 45.81 940 920 190.2
B 6 159 2268383 12838.01 925 899 176.6
B 5 172 544475 3077.61 925 899 176.6
B 0 155 75065 419.91 925 899 176.6
C 0 10 1356663 6456.2 896 901 210.0
C 14 238 161709 765.77 896 901 210.0
C 14 67 75152 353.58 896 901 210.0
D 8 195 1159897 5441.78 890 864 213.0
D 12 6 509429 2387.76 890 864 213.0
D 7 38 130125 606.89 890 864 213.0

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