ASTROSAT CZTI

Data Quality Report

Orbit 31072

Creation date: 2024-06-27T20:23:02.414514
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/AS1A10_109T01_9000004492_31072cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31072cztM0_level2_quad_clean.evt
Size (bytes)585,074,88076,976,640
Size558.0 MB 73.4 MB
Events in quadrant A3,314,395479,626
Events in quadrant B5,314,002473,726
Events in quadrant C4,057,453453,272
Events in quadrant D4,569,287446,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140072
B0208802
C0162002
D0183122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6852610.890251%
B68521141.663748%
C68522443.561004%
D6852971.415645%

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 7657 6853 0 0 0.00% 0.00%
B 7657 6853 1 1 0.01% 0.01%
C 7657 6853 66 66 0.86% 0.96%
D 7657 6853 40 40 0.52% 0.58%

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 13 170 17418 96.27 855 839 172.2
A 13 254 12100 65.39 855 839 172.2
A 3 137 8935 47.01 855 839 172.2
B 6 159 1832640 11224.82 841 819 163.2
B 0 190 82722 501.88 841 819 163.2
B 0 183 58410 352.9 841 819 163.2
C 15 208 418286 2182.83 806 813 191.3
C 0 10 271025 1412.85 806 813 191.3
C 14 238 130525 678.22 806 813 191.3
D 8 195 945201 4852.62 818 799 194.6
D 13 174 336151 1723.14 818 799 194.6
D 2 250 150180 767.56 818 799 194.6

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