ASTROSAT CZTI

Data Quality Report

Orbit 06999

Creation date: 2024-06-27T15:14:16.343765
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/AS1T01_151T01_9000000960_06999cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_06999cztM0_level2_quad_clean.evt
Size (bytes)506,900,160104,120,640
Size483.4 MB 99.3 MB
Events in quadrant A3,561,369655,807
Events in quadrant B3,913,742660,104
Events in quadrant C3,470,893649,330
Events in quadrant D3,862,655632,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163553
B0171632
C0161852
D0168982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7990280.350438%
B7990470.588235%
C7990100.125156%
D7990380.475594%

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 8475 7991 5 5 0.06% 0.06%
B 8475 7991 13 13 0.15% 0.16%
C 8475 7991 0 0 0.00% 0.00%
D 8475 7991 34 34 0.40% 0.43%

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 15 234 24450 126.6 909 887 186.1
A 15 239 20523 105.5 909 887 186.1
A 0 226 8875 42.92 909 887 186.1
B 0 228 186476 1062.18 915 893 174.7
B 0 214 93137 527.96 915 893 174.7
B 15 204 29371 162.99 915 893 174.7
C 13 61 6861 28.94 887 891 206.3
C 1 16 4869 19.28 887 891 206.3
C 10 22 4631 18.13 887 891 206.3
D 8 195 248246 1137.08 889 859 217.6
D 14 34 118416 540.33 889 859 217.6
D 13 169 59467 269.38 889 859 217.6

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