ASTROSAT CZTI

Data Quality Report

Orbit 20221011_A11_044T01_9000005360_level2

Creation date: 2022-10-22T12:30:51.948151
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/AS1A11_044T01_9000005360cztM0_level2.fits modeM0/AS1A11_044T01_9000005360cztM0_level2_quad_clean.evt
Size (bytes)588,674,880882,360,000
Size561.4 MB 841.5 MB
Events in quadrant A3,584,1505,906,564
Events in quadrant B3,428,4185,872,049
Events in quadrant C3,519,5725,754,321
Events in quadrant D2,894,2644,795,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013140
B013140
C013140
D013140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01385310
B01524270
C01566040
D02049060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A641011780.277687%
B6410118562.895431%
C6410120703.229279%
D64101761211.875010%

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 87998 64102 0 0 0.00% 0.00%
B 87998 64091 0 0 0.00% 0.00%
C 87998 63982 0 0 0.00% 0.00%
D 87998 63950 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 9 19 2956 8.91 939 887 232.1
A 7 110 2920 8.76 939 887 232.1
A 0 29 2777 8.14 939 887 232.1
B 2 9 2972 11.99 909 871 175.3
B 3 80 2777 10.87 909 871 175.3
B 5 128 2417 8.82 909 871 175.3
C 1 81 2931 8.69 930 877 236.3
C 3 203 2823 8.24 930 877 236.3
C 1 80 2816 8.21 930 877 236.3
D 10 113 2118 6.24 826 754 218.7
D 10 189 2112 6.21 826 754 218.7
D 6 67 2090 6.11 826 754 218.7

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