ASTROSAT CZTI

Data Quality Report

Orbit 01796

Creation date: 2024-06-27T14:12:49.598440
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_020T01_9000000296_01796cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01796cztM0_level2_quad_clean.evt
Size (bytes)988,937,28094,829,760
Size943.1 MB 90.4 MB
Events in quadrant A7,413,057619,963
Events in quadrant B7,583,476627,263
Events in quadrant C7,409,204603,893
Events in quadrant D7,142,102597,294

Level1 data integrity


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

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263561
B0268461
C0262699
D0254821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6070651.070840%
B6070540.889621%
C6068681.120633%
D6070450.741351%

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 7125 6070 264 264 3.71% 4.35%
B 7125 6071 279 279 3.92% 4.60%
C 7125 6070 331 331 4.65% 5.45%
D 7125 6071 242 242 3.40% 3.99%

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 0 231 10676 18.66 1936 1951 467.5
A -1 -1 -1 -1.0 1936 1951 467.5
A -1 -1 -1 -1.0 1936 1951 467.5
B 0 229 9344 15.52 1992 2005 472.9
B 15 85 7973 12.62 1992 2005 472.9
B 0 234 7345 11.29 1992 2005 472.9
C 8 208 388298 777.89 1786 1843 496.8
C 10 82 45326 87.52 1786 1843 496.8
C 7 159 5484 7.33 1786 1843 496.8
D 7 85 195260 353.9 1778 1841 546.5
D 10 199 104479 187.8 1778 1841 546.5
D 13 169 54139 95.69 1778 1841 546.5

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