ASTROSAT CZTI

Data Quality Report

Orbit 28270

Creation date: 2024-06-27T19:49:52.245230
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_067T01_9000004076_28270cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28270cztM0_level2_quad_clean.evt
Size (bytes)602,182,08095,699,520
Size574.3 MB 91.3 MB
Events in quadrant A3,196,741640,899
Events in quadrant B3,490,925651,942
Events in quadrant C3,255,000612,145
Events in quadrant D7,867,141552,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131590
B0141760
C0133640
D0277770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320420.664557%
B63201151.819620%
C6320881.392405%
D632076312.072785%

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 7640 6321 0 0 0.00% 0.00%
B 7640 6321 39 39 0.51% 0.62%
C 7640 6321 1 1 0.01% 0.02%
D 7640 6321 727 727 9.52% 11.50%

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 13 254 10183 56.82 829 816 164.9
A 3 137 7654 41.48 829 816 164.9
A 0 226 7131 38.31 829 816 164.9
B 10 245 138862 890.52 822 804 155.0
B 10 246 113700 728.21 822 804 155.0
B 12 111 18460 113.88 822 804 155.0
C 14 238 129740 701.83 790 796 183.7
C 3 233 44586 238.34 790 796 183.7
C 15 208 6014 28.4 790 796 183.7
D 1 52 4375633 24707.46 760 744 177.1
D 8 195 579435 3268.19 760 744 177.1
D 2 250 24479 134.04 760 744 177.1

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