ASTROSAT CZTI

Data Quality Report

Orbit 20230102_A12_025T12_9000005458_level2

Creation date: 2023-01-04T10:57:41.910351
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/AS1A12_025T12_9000005458cztM0_level2.fits modeM0/AS1A12_025T12_9000005458cztM0_level2_quad_clean.evt
Size (bytes)341,015,040268,588,800
Size325.2 MB 256.1 MB
Events in quadrant A2,188,6521,528,752
Events in quadrant B2,091,7381,554,845
Events in quadrant C2,138,0561,476,080
Events in quadrant D1,307,254978,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07700
B07700
C07700
D07700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0832690
B0816690
C0795310
D02166870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A377791110.293814%
B377794391.162021%
C37779810.214405%
D377791728445.750285%

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 52780 37779 0 0 0.00% 0.00%
B 52780 37776 0 0 0.00% 0.00%
C 52780 37779 0 0 0.00% 0.00%
D 52780 37567 0 0 0.00% 0.00%

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 7 110 1784 8.62 570 534 145.0
A 0 29 1744 8.35 570 534 145.0
A 9 19 1735 8.28 570 534 145.0
B 2 9 1825 11.73 553 526 110.8
B 3 80 1617 9.85 553 526 110.8
B 5 128 1442 8.27 553 526 110.8
C 1 81 1746 8.4 565 529 144.8
C 1 80 1684 7.98 565 529 144.8
C 1 65 1459 6.42 565 529 144.8
D 7 3 1039 6.98 373 340 100.2
D 10 113 1002 6.61 373 340 100.2
D 4 160 984 6.43 373 340 100.2

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