ASTROSAT CZTI

Data Quality Report

Orbit 27743

Creation date: 2024-06-27T19:43:48.273655
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/AS1A10_002T05_9000004000_27743cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27743cztM0_level2_quad_clean.evt
Size (bytes)471,579,84089,334,720
Size449.7 MB 85.2 MB
Events in quadrant A3,373,245587,222
Events in quadrant B3,536,837589,979
Events in quadrant C3,283,419570,712
Events in quadrant D3,695,887553,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136990
B0141930
C0131970
D0147170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57821722.974749%
B57811302.248746%
C5781821.418440%
D57811662.871476%

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 6697 5782 103 103 1.54% 1.78%
B 6696 5781 57 57 0.85% 0.99%
C 6696 5781 5 5 0.07% 0.09%
D 6696 5781 128 128 1.91% 2.21%

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 620004 4329.44 704 690 143.0
A 13 248 19118 128.82 704 690 143.0
A 13 254 10726 70.16 704 690 143.0
B 10 245 243501 1823.5 697 680 133.2
B 0 230 182384 1364.53 697 680 133.2
B 0 190 153332 1146.36 697 680 133.2
C 3 233 498756 3167.16 675 680 157.3
C 14 238 107214 677.42 675 680 157.3
C 0 207 16417 100.07 675 680 157.3
D 1 52 463058 2807.87 681 661 164.7
D 15 0 238899 1446.68 681 661 164.7
D 2 250 140120 846.85 681 661 164.7

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