ASTROSAT CZTI

Data Quality Report

Orbit 28391

Creation date: 2024-06-27T19:51:15.597670
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_045T05_9000004086_28391cztM0_level2.evt modeM0/AS1A10_045T05_9000004086_28391cztM0_level2_quad_clean.evt
Size (bytes)582,981,12093,859,200
Size556.0 MB 89.5 MB
Events in quadrant A3,243,532599,775
Events in quadrant B3,359,702613,806
Events in quadrant C3,296,620591,361
Events in quadrant D7,280,618549,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143430
B0145700
C0144480
D0265570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70071011.441416%
B70071201.712573%
C70071281.826745%
D7008103114.711758%

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 7247 7007 0 0 0.00% 0.00%
B 7247 7007 4 4 0.06% 0.06%
C 7247 7007 0 0 0.00% 0.00%
D 7248 7009 801 801 11.05% 11.43%

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 13 254 9613 51.16 840 821 171.8
A 3 137 8558 45.02 840 821 171.8
A 0 226 7075 36.39 840 821 171.8
B 10 245 80456 486.99 832 810 163.5
B 12 111 20848 122.52 832 810 163.5
B 11 111 18728 109.56 832 810 163.5
C 14 238 127635 667.96 804 809 189.9
C 4 224 29412 150.65 804 809 189.9
C 7 220 7438 34.91 804 809 189.9
D 1 52 3029482 16419.64 767 745 184.5
D 8 195 1237248 6703.43 767 745 184.5
D 2 250 71001 380.88 767 745 184.5

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