ASTROSAT CZTI

Data Quality Report

Orbit 32025

Creation date: 2024-06-27T20:35:23.472800
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/AS1A10_109T01_9000004678_32025cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32025cztM0_level2_quad_clean.evt
Size (bytes)686,496,960118,506,240
Size654.7 MB 113.0 MB
Events in quadrant A3,741,040809,123
Events in quadrant B6,969,399766,001
Events in quadrant C4,229,353761,444
Events in quadrant D5,342,278728,932

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158432
B0261172
C0172232
D0210472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75271081.434835%
B75286328.395324%
C75282152.856004%
D75274796.363757%

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 7952 7527 0 0 0.00% 0.00%
B 7953 7528 278 278 3.50% 3.69%
C 7953 7528 13 13 0.16% 0.17%
D 7952 7528 391 391 4.92% 5.19%

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 6 18060 87.6 963 944 195.4
A 13 254 14069 67.17 963 944 195.4
A 3 137 9510 43.84 963 944 195.4
B 6 159 1966181 11108.35 921 899 176.9
B 12 18 948740 5357.48 921 899 176.9
B 0 190 313726 1768.19 921 899 176.9
C 3 233 336685 1548.73 915 922 216.8
C 14 238 148869 682.42 915 922 216.8
C 0 10 121566 556.48 915 922 216.8
D 8 195 511019 2332.61 911 890 218.7
D 13 249 460427 2101.27 911 890 218.7
D 2 250 278821 1270.86 911 890 218.7

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