ASTROSAT CZTI

Data Quality Report

Orbit 13851

Creation date: 2024-06-27T16:46:55.703527
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/AS1A04_199T01_9000002040_13851cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13851cztM0_level2_quad_clean.evt
Size (bytes)481,210,56088,799,040
Size458.9 MB 84.7 MB
Events in quadrant A3,182,773570,127
Events in quadrant B3,284,032589,094
Events in quadrant C3,086,722567,522
Events in quadrant D4,597,207527,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133893
B0134592
C0130372
D0178422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225410.658635%
B6225440.706827%
C6225240.385542%
D62252003.212851%

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 7546 6226 7 7 0.09% 0.11%
B 7546 6226 6 6 0.08% 0.10%
C 7546 6227 12 12 0.16% 0.19%
D 7546 6227 190 190 2.52% 3.05%

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 9 143 114785 722.82 782 767 157.7
A 15 69 31227 193.1 782 767 157.7
A 8 15 23399 143.48 782 767 157.7
B 3 64 88490 590.63 789 770 148.5
B 4 80 36645 241.55 789 770 148.5
B 4 173 25867 168.98 789 770 148.5
C 3 233 53855 300.94 760 766 176.4
C 14 220 35457 196.65 760 766 176.4
C 6 253 22076 120.8 760 766 176.4
D 1 52 748438 4133.59 739 722 180.9
D 13 189 315173 1738.38 739 722 180.9
D 5 222 308093 1699.24 739 722 180.9

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