ASTROSAT CZTI

Data Quality Report

Orbit 25850

Creation date: 2024-06-27T19:22:04.434875
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/AS1A07_068T01_9000003756_25850cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25850cztM0_level2_quad_clean.evt
Size (bytes)1,618,735,680250,905,600
Size1.5 GB 239.3 MB
Events in quadrant A8,475,0521,738,808
Events in quadrant B7,995,5611,734,338
Events in quadrant C20,956,8521,402,065
Events in quadrant D10,524,1861,625,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355040
B0341650
C0734600
D0420440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159172581.620908%
B159181991.250157%
C15918476729.947230%
D159187394.642543%

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 19207 15920 54 54 0.28% 0.34%
B 19208 15921 12 12 0.06% 0.08%
C 19208 15921 3927 3927 20.44% 24.67%
D 19208 15921 539 539 2.81% 3.39%

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 408106 1003.42 2046 2008 404.7
A 6 16 169639 414.2 2046 2008 404.7
A 13 254 23305 52.62 2046 2008 404.7
B 15 33 56169 144.32 2005 1959 375.6
B 12 111 45719 116.5 2005 1959 375.6
B 11 111 41660 105.7 2005 1959 375.6
C 7 87 14202803 37794.0 1634 1645 375.8
C 14 238 260364 688.54 1634 1645 375.8
C 3 233 80233 209.15 1634 1645 375.8
D 1 52 1327093 2879.34 1946 1903 460.2
D 12 233 1164588 2526.25 1946 1903 460.2
D 7 80 575525 1246.35 1946 1903 460.2

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