ASTROSAT CZTI

Data Quality Report

Orbit 13001

Creation date: 2024-06-27T16:34:56.806740
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/AS1G08_055T01_9000001912_13001cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_13001cztM0_level2_quad_clean.evt
Size (bytes)593,190,72087,897,600
Size565.7 MB 83.8 MB
Events in quadrant A3,710,739551,472
Events in quadrant B5,894,809500,219
Events in quadrant C3,548,001557,345
Events in quadrant D4,301,605529,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157623
B0222562
C0157122
D0179582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75082072.757059%
B7508113615.130527%
C75081632.171018%
D75083084.102291%

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 7989 7511 1 1 0.01% 0.01%
B 7989 7511 599 599 7.50% 7.97%
C 7989 7511 11 11 0.14% 0.15%
D 7989 7511 110 110 1.38% 1.46%

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 12 189 111739 605.29 907 886 183.1
A 1 162 43914 234.94 907 886 183.1
A 1 178 17437 90.37 907 886 183.1
B 4 239 2194513 13871.2 836 814 158.1
B 3 64 186572 1174.59 836 814 158.1
B 0 219 134143 843.07 836 814 158.1
C 0 207 41678 197.26 892 896 206.7
C 14 234 25395 118.5 892 896 206.7
C 13 61 6545 27.32 892 896 206.7
D 1 52 908452 4253.59 884 857 213.4
D 8 195 35955 164.49 884 857 213.4
D 2 234 28934 131.59 884 857 213.4

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