ASTROSAT CZTI

Data Quality Report

Orbit 15245

Creation date: 2024-06-27T17:05:48.104318
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/AS1T02_072T01_9000002250_15245cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15245cztM0_level2_quad_clean.evt
Size (bytes)693,648,000146,528,640
Size661.5 MB 139.7 MB
Events in quadrant A4,141,500995,365
Events in quadrant B4,082,3051,012,200
Events in quadrant C8,327,597903,497
Events in quadrant D3,909,444965,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172833
B0175032
C0302542
D0173162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8059630.781735%
B80591341.662737%
C8059174121.603177%
D80591071.327708%

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 9295 8061 4 4 0.04% 0.05%
B 9295 8062 11 11 0.12% 0.14%
C 9295 8062 1181 1181 12.71% 14.65%
D 9295 8062 33 33 0.36% 0.41%

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 0 253 357724 1870.54 941 919 190.7
A 12 189 131376 683.91 941 919 190.7
A 9 143 24285 122.49 941 919 190.7
B 10 16 115008 641.47 947 921 177.9
B 0 189 69344 384.72 947 921 177.9
B 3 64 51997 287.18 947 921 177.9
C 4 254 4161575 21388.68 851 855 194.5
C 3 233 841577 4321.83 851 855 194.5
C 4 238 6844 30.79 851 855 194.5
D 7 38 143510 640.49 920 891 222.7
D 2 16 89981 400.1 920 891 222.7
D 9 68 62193 275.3 920 891 222.7

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