ASTROSAT CZTI

Data Quality Report

Orbit 20180515_G08_084T01_9000002100_level2

Creation date: 2018-05-19T15:03:21.327991
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/AS1G08_084T01_9000002100cztM0_level2_bc.evt modeM0/AS1G08_084T01_9000002100cztM0_level2_quad_clean.evt
Size (bytes)5,281,683,8401,928,759,040
Size4.9 GB 1.8 GB
Events in quadrant A28,665,65312,760,307
Events in quadrant B33,814,13712,818,179
Events in quadrant C32,455,06412,405,336
Events in quadrant D56,423,35911,777,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B02110
C02110
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02644240
B02847130
C02726330
D03623770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025800
B025800
C025800
D025800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12640613321.053747%
B12641431182.466499%
C12641011460.906574%
D12640172035.698531%

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 148055 126419 13 13 0.01% 0.01%
B 148055 126421 170 170 0.11% 0.13%
C 148055 126421 5 5 0.00% 0.00%
D 148055 126419 1756 1756 1.19% 1.39%

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 12 189 1115927 761.94 6749 6647 1455.9
A 8 15 966581 659.36 6749 6647 1455.9
A 9 143 192229 127.47 6749 6647 1455.9
B 0 229 1811215 1403.37 6766 6602 1285.9
B 0 182 1732875 1342.45 6766 6602 1285.9
B 4 97 993861 767.75 6766 6602 1285.9
C 3 233 6629666 4554.76 6557 6490 1454.1
C 14 234 96489 61.89 6557 6490 1454.1
C 0 207 54905 33.29 6557 6490 1454.1
D 5 222 8768149 5831.08 6438 6268 1502.6
D 8 195 7682701 5108.71 6438 6268 1502.6
D 12 110 6443027 4283.7 6438 6268 1502.6

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