ASTROSAT CZTI

Data Quality Report

Orbit 34782

Creation date: 2022-03-05T05:46:16.515453
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_004T01_9000004990_34782cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34782cztM0_level2_quad_clean.evt
Size (bytes)420,788,16067,345,920
Size401.3 MB 64.2 MB
Events in quadrant A2,546,697420,993
Events in quadrant B3,199,227435,141
Events in quadrant C2,848,738427,626
Events in quadrant D3,797,086392,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106913
B0126342
C0113932
D0149132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518260.115785%
B51821172.257816%
C5182310.598225%
D5182841.620996%

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 7064 5183 0 0 0.00% 0.00%
B 7064 5183 88 88 1.25% 1.70%
C 7064 5183 23 23 0.33% 0.44%
D 7064 5183 70 70 0.99% 1.35%

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 47465 372.39 628 617 125.8
A 15 169 40162 314.34 628 617 125.8
A 7 16 17305 132.65 628 617 125.8
B 5 172 562540 4623.98 633 616 121.5
B 5 255 61290 499.28 633 616 121.5
B 0 190 41079 332.96 633 616 121.5
C 15 214 223433 1542.32 620 626 144.5
C 0 10 100984 694.7 620 626 144.5
C 0 207 41690 284.25 620 626 144.5
D 8 195 939674 6331.56 608 590 148.3
D 1 52 165691 1113.16 608 590 148.3
D 2 250 152513 1024.31 608 590 148.3

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