ASTROSAT CZTI

Data Quality Report

Orbit 28709

Creation date: 2024-06-27T19:55:15.926322
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/AS1A10_123T03_9000004120_28709cztM0_level2.evt modeM0/AS1A10_123T03_9000004120_28709cztM0_level2_quad_clean.evt
Size (bytes)649,722,24094,616,640
Size619.6 MB 90.2 MB
Events in quadrant A4,636,093576,539
Events in quadrant B4,280,110583,927
Events in quadrant C4,396,263565,666
Events in quadrant D5,791,453551,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192791
B0181311
C0182871
D0230011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84633163.733901%
B84632502.954035%
C84633924.631927%
D84633584.230178%

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 8873 8466 132 132 1.49% 1.56%
B 8873 8465 11 11 0.12% 0.13%
C 8873 8463 0 0 0.00% 0.00%
D 8873 8464 184 184 2.07% 2.17%

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 15 174 460227 2151.87 1057 1031 213.4
A 14 239 87646 405.89 1057 1031 213.4
A 13 254 16288 71.5 1057 1031 213.4
B 0 156 55063 267.54 1053 1025 202.0
B 0 230 30619 146.52 1053 1025 202.0
B 12 111 24861 118.01 1053 1025 202.0
C 14 238 195477 817.04 1014 1018 238.0
C 3 233 192136 803.0 1014 1018 238.0
C 14 254 50081 206.14 1014 1018 238.0
D 8 195 648642 2639.05 1026 996 245.4
D 7 80 647159 2633.0 1026 996 245.4
D 1 52 280146 1137.49 1026 996 245.4

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