ASTROSAT CZTI

Data Quality Report

Orbit 22755

Creation date: 2024-06-27T18:45:13.833638
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/AS1A08_007T01_9000003362_22755cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22755cztM0_level2_quad_clean.evt
Size (bytes)600,235,20092,505,600
Size572.4 MB 88.2 MB
Events in quadrant A3,495,985609,897
Events in quadrant B3,737,984612,009
Events in quadrant C3,511,853579,059
Events in quadrant D6,988,922543,544

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142721
B0150791
C0143721
D0254467

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6551991.511220%
B65511251.908106%
C65521472.243590%
D655195714.608457%

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 7851 6552 0 0 0.00% 0.00%
B 7851 6552 16 16 0.20% 0.24%
C 7852 6553 2 2 0.03% 0.03%
D 7851 6552 811 811 10.33% 12.38%

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 13 254 11289 58.68 907 892 177.2
A 0 226 8164 41.04 907 892 177.2
A 3 137 6560 31.99 907 892 177.2
B 7 219 94276 578.43 889 873 161.5
B 0 228 61452 375.16 889 873 161.5
B 0 190 24415 145.79 889 873 161.5
C 14 238 140270 713.03 861 868 195.5
C 2 16 11658 55.19 861 868 195.5
C 13 61 6068 26.6 861 868 195.5
D 1 52 2988440 14869.7 838 815 200.9
D 2 152 261960 1299.74 838 815 200.9
D 10 230 232266 1151.95 838 815 200.9

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