ASTROSAT CZTI

Data Quality Report

Orbit 20861

Creation date: 2024-06-27T18:20:28.454441
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/AS1A05_160T01_9000003078_20861cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20861cztM0_level2_quad_clean.evt
Size (bytes)657,031,68079,819,200
Size626.6 MB 76.1 MB
Events in quadrant A3,550,673493,893
Events in quadrant B3,655,493504,816
Events in quadrant C3,550,927468,925
Events in quadrant D8,656,591450,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149052
B0150252
C0148772
D0306742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71631612.247662%
B71631792.498953%
C71632112.945693%
D716478810.999442%

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 8753 7165 0 0 0.00% 0.00%
B 8753 7165 0 0 0.00% 0.00%
C 8753 7165 0 0 0.00% 0.00%
D 8754 7166 557 557 6.36% 7.77%

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 0 226 7856 37.21 923 904 186.8
A 3 137 7826 37.05 923 904 186.8
A 12 194 6525 30.09 923 904 186.8
B 0 229 25966 141.32 916 895 177.4
B 12 111 21781 117.73 916 895 177.4
B 0 189 20110 108.31 916 895 177.4
C 14 238 135673 657.16 873 879 205.1
C 0 10 6641 28.09 873 879 205.1
C 13 61 6178 25.83 873 879 205.1
D 1 239 3922476 18938.62 857 833 207.1
D 1 52 1117076 5390.62 857 833 207.1
D 5 222 290077 1396.83 857 833 207.1

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