ASTROSAT CZTI

Data Quality Report

Orbit 01824

Creation date: 2024-06-27T14:12:53.849392
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/AS1G02_021T08_9000000302_01824cztM0_level2.evt modeM0/AS1G02_021T08_9000000302_01824cztM0_level2_quad_clean.evt
Size (bytes)468,616,32046,696,320
Size446.9 MB 44.5 MB
Events in quadrant A3,600,839303,436
Events in quadrant B3,710,044310,263
Events in quadrant C3,456,962302,702
Events in quadrant D3,234,882295,419

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127081
B0129971
C0122631
D0116181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2821401.417937%
B2821291.028004%
C2821170.602623%
D2821210.744417%

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 4001 2822 182 182 4.55% 6.45%
B 4001 2822 172 172 4.30% 6.09%
C 4001 2822 138 138 3.45% 4.89%
D 4001 2822 107 107 2.67% 3.79%

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
B 0 220 4763 16.31 977 981 231.8
B 15 85 3739 11.9 977 981 231.8
B 11 111 2228 5.38 977 981 231.8
C 7 159 4542 14.64 884 917 247.5
C 10 34 3224 9.32 884 917 247.5
C -1 -1 -1 -1.0 884 917 247.5
D 5 233 23874 85.57 859 889 268.6
D 10 172 6169 19.66 859 889 268.6
D 2 54 3323 9.06 859 889 268.6

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