ASTROSAT CZTI

Data Quality Report

Orbit 06765

Creation date: 2024-06-27T15:11:26.562061
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/AS1A02_006T01_9000000934_06765cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06765cztM0_level2_quad_clean.evt
Size (bytes)635,532,48085,127,040
Size606.1 MB 81.2 MB
Events in quadrant A3,693,366516,832
Events in quadrant B3,751,945524,412
Events in quadrant C3,681,452516,465
Events in quadrant D7,583,323468,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01663926
B01667716
C01673719
D028294142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79251712.157729%
B79272082.623943%
C79272032.560868%
D79056948.779254%

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 8484 7936 0 0 0.00% 0.00%
B 8484 7936 0 0 0.00% 0.00%
C 8484 7936 10 10 0.12% 0.13%
D 8484 7933 352 352 4.15% 4.44%

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 8 15 56711 288.49 934 911 193.4
A 15 239 22940 113.89 934 911 193.4
A 13 248 21252 105.17 934 911 193.4
B 4 81 45070 238.73 944 920 184.9
B 0 214 30576 160.35 944 920 184.9
B 0 187 20136 103.9 944 920 184.9
C 10 22 35794 161.17 918 920 216.4
C 9 16 31825 142.83 918 920 216.4
C 8 128 15899 69.23 918 920 216.4
D 12 220 3189090 14683.81 881 851 217.1
D 8 195 717665 3301.37 881 851 217.1
D 2 152 228322 1047.64 881 851 217.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter