ASTROSAT CZTI

Data Quality Report

Orbit 20190710_C04_009T06_9000003020_level2

Creation date: 2019-07-11T11:12:04.895662
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/AS1C04_009T06_9000003020cztM0_level2_bc.evt modeM0/AS1C04_009T06_9000003020cztM0_level2_quad_clean.evt
Size (bytes)526,080,960288,982,080
Size501.7 MB 275.6 MB
Events in quadrant A3,298,9671,967,254
Events in quadrant B3,923,7371,976,623
Events in quadrant C3,369,6881,900,870
Events in quadrant D4,292,2491,855,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318710
B0344370
C0323270
D0367480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152582281.494298%
B152582991.959628%
C152582061.350111%
D152586043.958579%

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 15938 15257 2 2 0.01% 0.01%
B 15938 15256 2 2 0.01% 0.01%
C 15938 15258 0 0 0.00% 0.00%
D 15938 15255 46 46 0.29% 0.30%

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 5 16 127270 714.01 787 774 177.2
A 12 16 71134 397.15 787 774 177.2
A 14 111 41059 227.39 787 774 177.2
B 0 197 268301 1767.32 788 770 151.4
B 7 220 131997 866.89 788 770 151.4
B 0 189 125506 824.01 788 770 151.4
C 9 54 399187 2209.43 757 754 180.3
C 3 233 42272 230.23 757 754 180.3
C 8 128 8167 41.11 757 754 180.3
D 1 52 460653 2498.84 768 741 184.1
D 12 218 369093 2001.36 768 741 184.1
D 13 153 140802 760.99 768 741 184.1

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