ASTROSAT CZTI

Data Quality Report

Orbit 45625

Creation date: 2024-06-27T23:14:22.282002
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/AS1A13_071T08_9000006114_45625cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45625cztM0_level2_quad_clean.evt
Size (bytes)770,880,960126,512,640
Size735.2 MB 120.7 MB
Events in quadrant A7,204,612873,004
Events in quadrant B4,874,551882,976
Events in quadrant C4,146,746841,467
Events in quadrant D11,678,846665,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270650
B0202010
C0183650
D0404260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81642362.890740%
B81653374.127373%
C81651852.265769%
D8165156319.142682%

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 8164 8164 36 36 0.44% 0.44%
B 8165 8165 193 193 2.36% 2.36%
C 8165 8165 126 126 1.54% 1.54%
D 8165 8165 1314 1314 16.09% 16.09%

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 3302752 17369.65 911 891 190.1
A 14 235 279834 1467.4 911 891 190.1
A 10 248 43222 222.68 911 891 190.1
B 5 172 657363 3702.1 905 877 177.3
B 12 18 136622 765.5 905 877 177.3
B 4 170 124757 698.59 905 877 177.3
C 14 254 619550 2941.55 888 891 210.3
C 2 14 23005 105.15 888 891 210.3
C 3 233 21701 98.95 888 891 210.3
D 11 241 6183204 28885.87 841 811 214.0
D 8 129 927808 4331.19 841 811 214.0
D 13 249 353984 1650.12 841 811 214.0

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