ASTROSAT CZTI

Data Quality Report

Orbit 20190928_A06_002T02_9000003206_level2

Creation date: 2019-10-03T18:25:20.184867
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/AS1A06_002T02_9000003206cztM0_level2_bc.evt modeM0/AS1A06_002T02_9000003206cztM0_level2_quad_clean.evt
Size (bytes)7,157,468,1602,488,550,400
Size6.7 GB 2.3 GB
Events in quadrant A41,213,37315,905,834
Events in quadrant B46,863,64016,210,528
Events in quadrant C39,064,99715,465,637
Events in quadrant D76,485,33314,575,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04023850
B04193350
C04014520
D05197700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02990
B02990
C02990
D02990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039240
B039240
C039240
D039240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19302022441.162574%
B19302132761.697225%
C19302331401.626749%
D19302297765.064708%

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 222668 193029 15 15 0.01% 0.01%
B 222668 193023 165 165 0.07% 0.09%
C 222668 193027 9 9 0.00% 0.00%
D 222669 193022 2650 2650 1.19% 1.37%

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 15 236 1960478 885.68 10126 9943 2202.3
A 13 254 253083 110.4 10126 9943 2202.3
A 0 226 64863 24.94 10126 9943 2202.3
B 3 64 2903147 1488.27 10308 10057 1943.9
B 0 229 1114552 568.18 10308 10057 1943.9
B 0 230 694743 352.22 10308 10057 1943.9
C 9 54 520562 219.39 9853 9816 2328.1
C 10 22 266967 110.46 9853 9816 2328.1
C 3 233 211503 86.63 9853 9816 2328.1
D 1 52 13323872 5918.82 9753 9428 2249.5
D 7 238 11012060 4891.12 9753 9428 2249.5
D 7 223 3940502 1747.52 9753 9428 2249.5

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