ASTROSAT CZTI

Data Quality Report

Orbit 20220625_A11_003T08_9000005202_level2

Creation date: 2022-10-18T12:20:12.044382
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/AS1A11_003T08_9000005202cztM0_level2.evt modeM0/AS1A11_003T08_9000005202cztM0_level2_quad_clean.evt
Size (bytes)2,100,565,440314,363,520
Size2.0 GB 299.8 MB
Events in quadrant A14,107,9271,985,813
Events in quadrant B17,347,7591,947,999
Events in quadrant C14,998,0451,876,881
Events in quadrant D15,223,5591,735,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593680
B0699760
C0610750
D0645380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28726640.222795%
B287268833.073870%
C287262020.703196%
D287262700.939915%

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 37859 28732 16 16 0.04% 0.06%
B 37859 28732 559 559 1.48% 1.95%
C 37859 28732 116 116 0.31% 0.40%
D 37859 28732 178 178 0.47% 0.62%

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 10 83 812388 1199.21 3388 3320 674.7
A 9 143 95766 137.02 3388 3320 674.7
A 13 254 48492 66.95 3388 3320 674.7
B 5 172 2404057 3823.81 3303 3216 627.9
B 0 182 540116 855.12 3303 3216 627.9
B 5 255 512644 811.36 3303 3216 627.9
C 15 214 1316657 1752.95 3242 3264 749.2
C 0 10 738404 981.17 3242 3264 749.2
C 0 207 155638 203.37 3242 3264 749.2
D 2 250 420674 528.12 3274 3195 790.5
D 10 199 379340 475.84 3274 3195 790.5
D 13 171 377256 473.2 3274 3195 790.5

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