ASTROSAT CZTI

Data Quality Report

Orbit 20210129_A10_123T07_9000004140_level2

Creation date: 2021-02-01T10:51:37.359846
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_123T07_9000004140cztM0_level2_bc.evt modeM0/AS1A10_123T07_9000004140cztM0_level2_quad_clean.evt
Size (bytes)2,908,437,120726,814,080
Size2.7 GB 693.1 MB
Events in quadrant A11,409,0654,729,752
Events in quadrant B12,896,8694,861,283
Events in quadrant C12,085,9264,641,288
Events in quadrant D48,065,2084,122,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01101560
B01157160
C01145340
D02340630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010920
B010920
C010920
D010920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533013660.686666%
B533017191.348943%
C5330111442.146301%
D53301945917.746384%

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 63666 53296 0 0 0.00% 0.00%
B 63666 53295 15 15 0.02% 0.03%
C 63666 53293 13 13 0.02% 0.02%
D 63666 53290 2016 2016 3.17% 3.78%

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 91694 142.77 2903 2859 622.2
A 13 6 83194 129.11 2903 2859 622.2
A 12 96 34415 50.72 2903 2859 622.2
B 10 246 837257 1506.02 2946 2881 554.0
B 10 245 541693 972.54 2946 2881 554.0
B 15 32 64757 111.68 2946 2881 554.0
C 3 233 758962 1138.83 2798 2784 664.0
C 15 208 271390 404.53 2798 2784 664.0
C 2 16 131919 194.48 2798 2784 664.0
D 8 195 27753057 45249.84 2650 2566 613.3
D 7 80 6674973 10880.0 2650 2566 613.3
D 1 52 2521020 4106.58 2650 2566 613.3

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