ASTROSAT CZTI

Data Quality Report

Orbit 28881

Creation date: 2024-06-27T19:57:33.634670
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_123T07_9000004140_28881cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28881cztM0_level2_quad_clean.evt
Size (bytes)630,293,76081,532,800
Size601.1 MB 77.8 MB
Events in quadrant A3,047,515519,999
Events in quadrant B3,050,968534,459
Events in quadrant C3,301,097505,244
Events in quadrant D9,256,119462,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131752
B0131242
C0136732
D0320083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6389911.424323%
B63901021.596244%
C63902373.708920%
D6389126619.815308%

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 6874 6389 0 0 0.00% 0.00%
B 6875 6390 0 0 0.00% 0.00%
C 6875 6391 11 11 0.16% 0.17%
D 6873 6388 1203 1203 17.50% 18.83%

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 12 96 31963 198.94 775 757 156.9
A 13 6 11888 70.96 775 757 156.9
A 13 254 11110 66.0 775 757 156.9
B 12 111 18333 118.28 769 748 148.7
B 11 111 16779 107.82 769 748 148.7
B 14 111 15079 96.39 769 748 148.7
C 14 238 166371 966.15 731 734 171.4
C 3 233 118406 686.37 731 734 171.4
C 14 254 73180 422.57 731 734 171.4
D 8 195 4879139 29219.5 697 675 167.0
D 7 80 1437907 8608.28 697 675 167.0
D 1 52 267829 1600.12 697 675 167.0

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