ASTROSAT CZTI

Data Quality Report

Orbit 46251

Creation date: 2024-06-27T23:20:51.171469
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_094T02_9000006190_46251cztM0_level2.fits modeM0/AS1A13_094T02_9000006190_46251cztM0_level2_quad_clean.evt
Size (bytes)1,541,750,400294,347,520
Size1.4 GB 280.7 MB
Events in quadrant A17,080,3331,972,272
Events in quadrant B11,476,9932,016,785
Events in quadrant C9,336,0282,022,854
Events in quadrant D17,685,8691,567,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0641584
B0472074
C0421894
D06607713

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193213882.008178%
B193213811.971948%
C193212031.050670%
D19319254213.158031%

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 20781 19323 9 9 0.04% 0.05%
B 20781 19323 126 126 0.61% 0.65%
C 20781 19325 150 150 0.72% 0.78%
D 20781 19323 2470 2470 11.89% 12.78%

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 8738624 20302.48 2082 2036 430.3
A 9 191 83824 190.06 2082 2036 430.3
A 6 10 67181 151.39 2082 2036 430.3
B 3 112 2573009 6367.48 2086 2016 403.8
B 5 172 276637 680.14 2086 2016 403.8
B 5 255 147560 360.46 2086 2016 403.8
C 12 2 726600 1517.05 2070 2082 477.6
C 1 3 261547 543.29 2070 2082 477.6
C 14 254 81552 166.4 2070 2082 477.6
D 1 52 7532389 15420.51 1965 1903 488.3
D 5 235 1032853 2111.12 1965 1903 488.3
D 2 249 423550 863.43 1965 1903 488.3

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