ASTROSAT CZTI

Data Quality Report

Orbit 45260

Creation date: 2024-06-27T23:11:39.742646
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/AS1A13_024T03_9000006064_45260cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45260cztM0_level2_quad_clean.evt
Size (bytes)487,751,040109,451,520
Size465.2 MB 104.4 MB
Events in quadrant A5,386,760719,710
Events in quadrant B3,966,633747,234
Events in quadrant C3,203,086725,120
Events in quadrant D4,964,900643,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212092
B0166532
C0146002
D0194922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68703344.861718%
B68704045.880640%
C68692062.998981%
D68694406.405590%

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 7000 6870 5 5 0.07% 0.07%
B 7000 6870 73 73 1.04% 1.06%
C 6999 6871 35 35 0.50% 0.51%
D 6999 6870 238 238 3.40% 3.46%

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 10 83 2209497 13200.98 795 777 167.3
A 13 248 47803 281.06 795 777 167.3
A 12 227 23320 134.73 795 777 167.3
B 12 3 518890 3295.09 787 762 157.2
B 12 16 86130 542.91 787 762 157.2
B 5 255 75725 476.74 787 762 157.2
C 14 254 116322 617.86 783 788 187.0
C 1 3 15288 77.54 783 788 187.0
C 12 249 13086 65.77 783 788 187.0
D 13 249 816431 4173.08 774 747 195.5
D 11 241 614838 3141.72 774 747 195.5
D 13 171 94793 481.14 774 747 195.5

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