ASTROSAT CZTI

Data Quality Report

Orbit 28782

Creation date: 2024-06-27T19:56:16.064130
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/AS1C05_019T04_9000004130_28782cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28782cztM0_level2_quad_clean.evt
Size (bytes)720,239,04091,555,200
Size686.9 MB 87.3 MB
Events in quadrant A3,205,747622,532
Events in quadrant B3,339,045631,730
Events in quadrant C3,414,284594,203
Events in quadrant D11,403,722460,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138351
B0142431
C0143111
D0383761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6630731.101056%
B66311321.990650%
C66312303.468557%
D6631363954.878601%

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 6945 6630 0 0 0.00% 0.00%
B 6946 6631 24 24 0.35% 0.36%
C 6946 6631 10 10 0.14% 0.15%
D 6945 6630 3500 3500 50.40% 52.79%

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
A 15 174 99575 621.79 788 771 158.9
A 5 98 39493 243.68 788 771 158.9
A 13 254 12161 71.68 788 771 158.9
B 5 255 216288 1454.93 778 758 148.1
B 0 229 23722 155.02 778 758 148.1
B 0 156 20200 131.24 778 758 148.1
C 3 233 267124 1520.39 747 747 175.2
C 14 238 167058 949.25 747 747 175.2
C 14 254 68040 384.09 747 747 175.2
D 8 195 7823212 52327.32 628 609 149.5
D 1 52 908809 6075.17 628 609 149.5
D 13 104 186615 1244.24 628 609 149.5

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