ASTROSAT CZTI

Data Quality Report

Orbit 14609

Creation date: 2024-06-27T16:57:28.050760
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/AS1G08_059T01_9000002150_14609cztM0_level2.evt modeM0/AS1G08_059T01_9000002150_14609cztM0_level2_quad_clean.evt
Size (bytes)553,435,200106,416,000
Size527.8 MB 101.5 MB
Events in quadrant A3,898,853683,522
Events in quadrant B3,708,448683,344
Events in quadrant C4,526,452668,727
Events in quadrant D4,111,479658,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165963
B0160942
C0186142
D0175192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75991271.671273%
B75991612.118700%
C7599740.973812%
D75992523.316226%

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 8290 7604 1 1 0.01% 0.01%
B 8290 7604 3 3 0.04% 0.04%
C 8290 7604 0 0 0.00% 0.00%
D 8290 7604 188 188 2.27% 2.47%

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 133356 703.76 918 897 188.2
A 1 178 51282 267.7 918 897 188.2
A 1 161 46713 243.42 918 897 188.2
B 10 247 31024 169.21 915 892 178.1
B 0 214 28303 153.93 915 892 178.1
B 12 111 21282 114.5 915 892 178.1
C 3 233 1048027 5063.45 889 893 206.8
C 13 61 6334 26.31 889 893 206.8
C 8 128 4654 18.19 889 893 206.8
D 10 199 611357 2915.36 879 857 209.4
D 2 152 54363 255.51 879 857 209.4
D 12 110 40336 188.53 879 857 209.4

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