ASTROSAT CZTI

Data Quality Report

Orbit 35662

Creation date: 2022-05-05T15:31:26.983744
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/AS1C07_001T07_9000005104_35662cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35662cztM0_level2_quad_clean.evt
Size (bytes)3,618,907,200462,254,400
Size3.4 GB 440.8 MB
Events in quadrant A42,239,8092,788,504
Events in quadrant B21,419,9582,970,605
Events in quadrant C19,461,1213,068,729
Events in quadrant D24,174,1182,812,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01485268
B0868367
C0785987
D0951247

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34316662819.314605%
B3431616784.889847%
C343166581.917473%
D3431624637.177410%

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 44643 34322 6080 6080 13.62% 17.71%
B 44643 34322 1109 1109 2.48% 3.23%
C 44643 34322 543 543 1.22% 1.58%
D 44643 34322 1975 1975 4.42% 5.75%

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 15 169 26992181 36186.01 3736 3656 745.8
A 10 83 689821 920.0 3736 3656 745.8
A 13 6 65439 82.84 3736 3656 745.8
B 5 172 5095155 7159.09 3782 3673 711.2
B 5 255 1019891 1428.9 3782 3673 711.2
B 15 85 123844 168.97 3782 3673 711.2
C 0 10 1521092 1760.82 3785 3804 861.7
C 15 214 1396801 1616.58 3785 3804 861.7
C 1 23 1081259 1250.39 3785 3804 861.7
D 10 118 3492546 3909.85 3678 3574 892.4
D 13 249 2461331 2754.24 3678 3574 892.4
D 2 249 932800 1041.32 3678 3574 892.4

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