ASTROSAT CZTI

Data Quality Report

Orbit 34905

Creation date: 2022-03-13T14:32:02.668428
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_065T05_9000004998_34905cztM0_level2.evt modeM0/AS1A11_065T05_9000004998_34905cztM0_level2_quad_clean.evt
Size (bytes)481,829,76061,643,520
Size459.5 MB 58.8 MB
Events in quadrant A2,739,874373,281
Events in quadrant B3,131,522378,658
Events in quadrant C3,080,098367,995
Events in quadrant D5,241,939335,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118933
B0130102
C0124212
D0197982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588660.101937%
B5886931.580020%
C5886480.815494%
D58862914.943935%

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 7229 5887 0 0 0.00% 0.00%
B 7229 5887 63 63 0.87% 1.07%
C 7229 5887 44 44 0.61% 0.75%
D 7229 5887 281 281 3.89% 4.77%

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 60896 429.79 688 674 140.1
A 13 6 13356 90.51 688 674 140.1
A 13 254 9987 66.46 688 674 140.1
B 5 172 152750 1147.01 684 666 132.6
B 5 200 112515 843.56 684 666 132.6
B 4 232 69393 518.34 684 666 132.6
C 15 214 268373 1704.04 669 673 157.1
C 0 10 148390 940.29 669 673 157.1
C 14 67 23250 143.71 669 673 157.1
D 8 195 1121403 6814.52 661 642 164.5
D 12 227 786999 4781.26 661 642 164.5
D 10 253 228610 1386.1 661 642 164.5

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