ASTROSAT CZTI

Data Quality Report

Orbit 35546

Creation date: 2022-04-26T10:37:05.859675
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_046T08_9000005088_35546cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35546cztM0_level2_quad_clean.evt
Size (bytes)1,378,117,440224,035,200
Size1.3 GB 213.7 MB
Events in quadrant A11,461,5501,371,443
Events in quadrant B9,081,3961,436,794
Events in quadrant C8,927,6921,458,742
Events in quadrant D11,144,1261,371,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450203
B0378123
C0360523
D0440173

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166309305.592303%
B166302821.695731%
C16630860.517138%
D166305773.469633%

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 20632 16633 765 765 3.71% 4.60%
B 20632 16633 147 147 0.71% 0.88%
C 20632 16633 62 62 0.30% 0.37%
D 20632 16633 437 437 2.12% 2.63%

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 3848632 10331.61 1852 1810 372.3
A 10 83 325204 868.56 1852 1810 372.3
A 9 143 83863 220.37 1852 1810 372.3
B 5 236 681210 1920.02 1871 1821 353.8
B 5 172 631674 1780.03 1871 1821 353.8
B 0 190 116171 323.16 1871 1821 353.8
C 15 214 736858 1732.16 1850 1867 424.3
C 0 10 595373 1398.72 1850 1867 424.3
C 14 128 194207 453.29 1850 1867 424.3
D 12 235 1249178 2798.4 1831 1776 445.8
D 8 195 732597 1639.51 1831 1776 445.8
D 10 118 565089 1263.73 1831 1776 445.8

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