ASTROSAT CZTI

Data Quality Report

Orbit 20200210_A07_147T01_9000003490_level2

Creation date: 2020-02-12T15:50:36.231614
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/AS1A07_147T01_9000003490cztM0_level2_bc.evt modeM0/AS1A07_147T01_9000003490cztM0_level2_quad_clean.evt
Size (bytes)4,276,232,6401,239,396,480
Size4.0 GB 1.2 GB
Events in quadrant A20,037,4207,901,541
Events in quadrant B28,178,8928,015,586
Events in quadrant C20,134,4457,714,759
Events in quadrant D54,552,2107,260,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01370
C01370
D01370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019760
B019760
C019760
D019760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010040
B02326380
C02031310
D03195510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9695012071.244972%
B9695338663.987499%
C9695218391.896815%
D969611429414.742010%

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 129396 96977 11 11 0.01% 0.01%
B 129392 96974 183 183 0.14% 0.19%
C 129418 96978 36 36 0.03% 0.04%
D 129394 96988 7348 7348 5.68% 7.58%

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 12 96 270034 239.87 5119 5006 1104.9
A 13 254 144419 126.18 5119 5006 1104.9
A 0 226 32643 25.01 5119 5006 1104.9
B 3 64 5544209 5754.65 5125 4993 962.6
B 0 189 1122859 1161.34 5125 4993 962.6
B 0 229 841607 869.15 5125 4993 962.6
C 10 9 354015 301.8 4948 4924 1156.7
C 7 247 289782 246.27 4948 4924 1156.7
C 0 10 154661 129.45 4948 4924 1156.7
D 1 52 28833742 26127.2 4737 4564 1103.4
D 12 233 3965997 3590.15 4737 4564 1103.4
D 9 85 2295569 2076.28 4737 4564 1103.4

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