ASTROSAT CZTI

Data Quality Report

Orbit 03757

Creation date: 2024-06-27T14:33:17.311880
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/AS1G05_248T01_9000000486_03757cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03757cztM0_level2_quad_clean.evt
Size (bytes)1,417,037,760195,998,400
Size1.3 GB 186.9 MB
Events in quadrant A10,993,5061,181,164
Events in quadrant B10,209,7271,186,862
Events in quadrant C7,999,4251,178,105
Events in quadrant D12,472,2911,123,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451954
B0425493
C0374273
D0501843

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183745062.753891%
B183741270.691194%
C18374390.212256%
D183746373.466855%

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 20379 18377 414 414 2.03% 2.25%
B 20379 18377 27 27 0.13% 0.15%
C 20379 18377 16 16 0.08% 0.09%
D 20379 18377 598 598 2.93% 3.25%

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 13 251 2192017 5232.93 2043 1998 418.5
A 0 118 369115 877.21 2043 1998 418.5
A 8 15 220315 521.66 2043 1998 418.5
B 15 204 1081026 2689.88 2084 2032 401.1
B 14 167 640606 1591.93 2084 2032 401.1
B 15 54 86076 209.52 2084 2032 401.1
C 1 16 124732 262.34 2005 2014 467.8
C 13 61 16779 31.56 2005 2014 467.8
C 8 128 13401 24.34 2005 2014 467.8
D 1 20 3053375 6382.54 1979 1923 478.1
D 8 112 702457 1465.27 1979 1923 478.1
D 13 249 304088 632.02 1979 1923 478.1

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
Veto Counter