ASTROSAT CZTI

Data Quality Report

Orbit 45057

Creation date: 2024-06-27T23:09:28.357172
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_020T01_9000006040_45057cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45057cztM0_level2_quad_clean.evt
Size (bytes)735,278,400113,385,600
Size701.2 MB 108.1 MB
Events in quadrant A6,256,267784,057
Events in quadrant B3,824,948815,134
Events in quadrant C3,562,621806,849
Events in quadrant D12,997,749508,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238343
B0164283
C0159093
D0438033

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74443724.997313%
B74442553.425578%
C7444951.276196%
D7444273736.767867%

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 7974 7446 18 18 0.23% 0.24%
B 7974 7446 44 44 0.55% 0.59%
C 7974 7446 18 18 0.23% 0.24%
D 7974 7446 2446 2446 30.67% 32.85%

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 2747959 15294.28 866 845 179.6
A 13 248 64949 356.89 866 845 179.6
A 0 243 40513 220.85 866 845 179.6
B 5 255 100813 579.77 868 841 172.4
B 5 32 91071 523.27 868 841 172.4
B 0 183 74175 425.28 868 841 172.4
C 1 3 115568 562.11 863 867 204.1
C 12 250 40746 195.43 863 867 204.1
C 12 2 19106 89.38 863 867 204.1
D 11 241 4621285 23338.2 764 739 198.0
D 13 174 2753471 13903.94 764 739 198.0
D 5 235 779751 3934.76 764 739 198.0

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