ASTROSAT CZTI

Data Quality Report

Orbit 20190509_T03_108T01_9000002898_level2

Creation date: 2019-05-10T16:42:08.625503
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/AS1T03_108T01_9000002898cztM0_level2_bc.evt modeM0/AS1T03_108T01_9000002898cztM0_level2_quad_clean.evt
Size (bytes)1,121,526,720390,234,240
Size1.0 GB 372.2 MB
Events in quadrant A7,080,5392,442,989
Events in quadrant B7,514,9742,459,252
Events in quadrant C7,307,2112,373,125
Events in quadrant D9,859,6832,327,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0674160
B0690860
C0686940
D0764500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06540
B06540
C06540
D06540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322604831.497210%
B322606371.974582%
C322606321.959082%
D322609382.907626%

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 38105 32257 0 0 0.00% 0.00%
B 38105 32257 6 6 0.02% 0.02%
C 38105 32262 1 1 0.00% 0.00%
D 38105 32259 187 187 0.49% 0.58%

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 40914 100.44 1818 1784 389.6
A 12 96 21309 50.12 1818 1784 389.6
A 12 16 17105 39.33 1818 1784 389.6
B 7 220 147831 434.22 1820 1779 336.4
B 0 244 129925 380.99 1820 1779 336.4
B 3 64 72173 209.29 1820 1779 336.4
C 3 233 501993 1243.1 1739 1733 402.4
C 9 221 49312 118.23 1739 1733 402.4
C 0 207 28004 65.28 1739 1733 402.4
D 13 104 820182 2021.75 1784 1724 404.8
D 12 233 722772 1781.13 1784 1724 404.8
D 1 52 629626 1551.04 1784 1724 404.8

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