ASTROSAT CZTI

Data Quality Report

Orbit 27233

Creation date: 2024-06-27T19:38:01.273546
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/AS1T03_243T01_9000003918_27233cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27233cztM0_level2_quad_clean.evt
Size (bytes)681,716,160104,353,920
Size650.1 MB 99.5 MB
Events in quadrant A4,312,261661,794
Events in quadrant B5,819,793661,373
Events in quadrant C4,119,191643,016
Events in quadrant D5,822,420606,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183120
B0226790
C0176430
D0231810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84381361.611756%
B84444435.246329%
C84441481.752724%
D84435596.620869%

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 9015 8445 28 28 0.31% 0.33%
B 9016 8448 147 147 1.63% 1.74%
C 9016 8448 8 8 0.09% 0.09%
D 9016 8448 345 345 3.83% 4.08%

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 129953 612.58 1041 1021 210.5
A 14 235 127372 600.32 1041 1021 210.5
A 8 192 17130 76.54 1041 1021 210.5
B 3 64 1169547 5907.91 1027 1003 197.8
B 15 33 570526 2879.39 1027 1003 197.8
B 4 171 31498 154.18 1027 1003 197.8
C 14 238 157996 662.58 995 999 236.9
C 15 208 78364 326.5 995 999 236.9
C 13 61 6921 24.99 995 999 236.9
D 1 52 1409890 5849.88 972 949 240.8
D 5 222 321970 1332.87 972 949 240.8
D 2 250 193145 797.99 972 949 240.8

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