ASTROSAT CZTI

Data Quality Report

Orbit 36342

Creation date: 2022-06-18T15:34:28.706174
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_001T08_9000005190_36342cztM0_level2.evt modeM0/AS1C07_001T08_9000005190_36342cztM0_level2_quad_clean.evt
Size (bytes)291,360,96053,412,480
Size277.9 MB 50.9 MB
Events in quadrant A1,872,213343,725
Events in quadrant B2,531,108332,632
Events in quadrant C1,851,974340,118
Events in quadrant D2,301,418324,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081231
B0100681
C079871
D095591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A391270.178937%
B39121884.805726%
C391240.102249%
D3912952.428425%

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 3912 3912 2 2 0.05% 0.05%
B 3912 3912 149 149 3.81% 3.81%
C 3912 3912 1 1 0.03% 0.03%
D 3912 3912 94 94 2.40% 2.40%

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 10 83 127863 1457.07 428 418 87.5
A 9 143 35968 406.44 428 418 87.5
A 12 189 21101 236.47 428 418 87.5
B 5 172 313334 3923.94 416 405 79.7
B 5 255 166188 2078.82 416 405 79.7
B 5 236 137732 1722.0 416 405 79.7
C 15 214 170049 1744.34 416 418 97.2
C 0 10 47468 483.82 416 418 97.2
C 4 254 3131 27.9 416 418 97.2
D 12 6 305848 2938.88 416 403 103.9
D 13 171 78254 749.05 416 403 103.9
D 2 153 72047 689.33 416 403 103.9

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