ASTROSAT CZTI

Data Quality Report

Orbit 34309

Creation date: 2024-06-27T20:58:57.057923
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/AS1A11_047T07_9000004892_34309cztM0_level2.evt modeM0/AS1A11_047T07_9000004892_34309cztM0_level2_quad_clean.evt
Size (bytes)97,966,08019,491,840
Size93.4 MB 18.6 MB
Events in quadrant A481,937130,957
Events in quadrant B826,303125,981
Events in quadrant C597,763133,201
Events in quadrant D991,564124,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020311
B030991
C023091
D036721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97640.409836%
B97611111.372951%
C976303.073770%
D976474.815574%

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 976 976 1 1 0.10% 0.10%
B 976 976 71 71 7.27% 7.27%
C 976 976 25 25 2.56% 2.56%
D 976 976 34 34 3.48% 3.48%

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 10 83 12608 483.34 117 115 25.8
A 9 143 8215 313.38 117 115 25.8
A 13 6 4424 166.71 117 115 25.8
B 4 171 181530 7439.02 113 110 24.4
B 5 255 78707 3222.82 113 110 24.4
B 5 172 49943 2043.37 113 110 24.4
C 0 10 87945 3017.18 117 118 29.1
C 15 214 44363 1519.98 117 118 29.1
C 14 67 3126 103.34 117 118 29.1
D 8 195 140285 4689.17 112 109 29.9
D 12 227 139044 4647.66 112 109 29.9
D 12 235 125028 4178.8 112 109 29.9

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