ASTROSAT CZTI

Data Quality Report

Orbit 26526

Creation date: 2024-06-27T19:30:03.299505
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/AS1C05_019T04_9000003838_26526cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26526cztM0_level2_quad_clean.evt
Size (bytes)1,549,296,000292,475,520
Size1.4 GB 278.9 MB
Events in quadrant A8,897,3631,951,152
Events in quadrant B9,520,6821,972,670
Events in quadrant C10,861,1141,895,642
Events in quadrant D16,371,5701,741,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386250
B0405180
C0445150
D0614090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188211490.791669%
B188222931.556689%
C188214722.507837%
D18821219111.641252%

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 20862 18823 11 11 0.05% 0.06%
B 20863 18824 85 85 0.41% 0.45%
C 20862 18823 67 67 0.32% 0.36%
D 20862 18821 1895 1895 9.08% 10.07%

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 0 13 151212 333.57 2221 2170 446.8
A 5 168 144862 319.36 2221 2170 446.8
A 9 130 33451 70.01 2221 2170 446.8
B 5 172 489053 1165.68 2214 2155 417.7
B 3 112 158921 375.31 2214 2155 417.7
B 15 32 70668 164.03 2214 2155 417.7
C 3 233 1781665 3584.46 2132 2142 496.5
C 4 254 368053 737.05 2132 2142 496.5
C 14 238 339092 678.71 2132 2142 496.5
D 7 80 3518839 7109.89 2039 1991 494.6
D 1 52 3459048 6989.02 2039 1991 494.6
D 12 233 1184982 2391.61 2039 1991 494.6

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