ASTROSAT CZTI

Data Quality Report

Orbit 35648

Creation date: 2022-05-03T00:38:52.547655
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/AS1C07_001T07_9000005104_35648cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35648cztM0_level2_quad_clean.evt
Size (bytes)295,666,56023,970,240
Size282.0 MB 22.9 MB
Events in quadrant A4,746,75777,981
Events in quadrant B1,796,558161,435
Events in quadrant C1,288,230176,797
Events in quadrant D991,981169,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153692
B065381
C049601
D041971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18991899100.000000%
B189935018.430753%
C18991196.266456%
D1899160.842549%

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 3570 1899 1867 1867 52.30% 98.31%
B 3571 1900 233 233 6.52% 12.26%
C 3571 1900 82 82 2.30% 4.32%
D 3571 1900 7 7 0.20% 0.37%

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 15 169 4234613 162676.05 122 119 26.0
A 10 83 32590 1247.42 122 119 26.0
A 13 6 2418 88.3 122 119 26.0
B 5 172 955107 22381.54 210 205 42.7
B 12 111 5105 114.85 210 205 42.7
B 11 111 4656 104.33 210 205 42.7
C 0 10 231786 4542.14 216 217 51.0
C 12 249 83860 1640.62 216 217 51.0
C 15 214 78661 1538.65 216 217 51.0
D 2 249 44644 795.49 222 215 55.9
D 12 6 29272 520.26 222 215 55.9
D 8 195 16838 297.63 222 215 55.9

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