ASTROSAT CZTI

Data Quality Report

Orbit 21035

Creation date: 2024-06-27T18:22:46.761798
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/AS1A05_088T02_9000003106_21035cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21035cztM0_level2_quad_clean.evt
Size (bytes)540,152,64088,470,720
Size515.1 MB 84.4 MB
Events in quadrant A3,657,844553,075
Events in quadrant B3,942,895554,436
Events in quadrant C3,711,539528,562
Events in quadrant D4,532,534516,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157292
B0163062
C0158552
D0184912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75622493.292780%
B75623044.020101%
C75632693.556790%
D75632793.689012%

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 8852 7564 0 0 0.00% 0.00%
B 8852 7564 9 9 0.10% 0.12%
C 8853 7565 0 0 0.00% 0.00%
D 8853 7565 56 56 0.63% 0.74%

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 13 254 9713 45.61 949 927 192.6
A 0 226 8133 37.41 949 927 192.6
A 3 137 7990 36.66 949 927 192.6
B 0 189 95785 518.58 946 920 182.9
B 3 64 33462 177.89 946 920 182.9
B 0 228 31826 168.95 946 920 182.9
C 14 238 140896 656.04 909 914 213.4
C 9 54 24581 110.92 909 914 213.4
C 13 61 6314 25.31 909 914 213.4
D 1 52 696044 3102.2 918 889 224.1
D 1 20 188598 837.67 918 889 224.1
D 12 233 50099 219.6 918 889 224.1

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