ASTROSAT CZTI

Data Quality Report

Orbit 09581

Creation date: 2024-06-27T15:48:01.198252
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/AS1G07_042T01_9000001360_09581cztM0_level2.evt modeM0/AS1G07_042T01_9000001360_09581cztM0_level2_quad_clean.evt
Size (bytes)567,348,48069,557,760
Size541.1 MB 66.3 MB
Events in quadrant A3,919,372432,024
Events in quadrant B3,407,603434,958
Events in quadrant C3,225,248425,047
Events in quadrant D6,202,716373,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157823
B0137682
C0132602
D0225212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63051502.379064%
B63051001.586043%
C6305610.967486%
D6305105216.685170%

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 7630 6306 3 3 0.04% 0.05%
B 7630 6306 10 10 0.13% 0.16%
C 7630 6306 0 0 0.00% 0.00%
D 7630 6306 899 899 11.78% 14.26%

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 1 162 225495 1310.04 866 851 171.5
A 1 178 119974 694.68 866 851 171.5
A 1 161 111854 647.33 866 851 171.5
B 10 245 52204 319.24 860 845 160.9
B 12 111 17505 103.56 860 845 160.9
B 11 111 14678 85.98 860 845 160.9
C 13 61 6292 28.98 826 833 188.4
C 14 234 2656 9.68 826 833 188.4
C 14 67 2578 9.26 826 833 188.4
D 1 52 3043487 15307.35 772 757 198.8
D 10 172 45058 222.87 772 757 198.8
D 2 234 38238 188.56 772 757 198.8

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