ASTROSAT CZTI

Data Quality Report

Orbit 20190826_T03_136T01_9000003124_level2

Creation date: 2019-08-28T10:58:41.413913
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_136T01_9000003124cztM0_level2_bc.evt modeM0/AS1T03_136T01_9000003124cztM0_level2_quad_clean.evt
Size (bytes)5,002,966,0801,242,164,160
Size4.7 GB 1.2 GB
Events in quadrant A21,260,4178,118,618
Events in quadrant B23,985,9538,245,737
Events in quadrant C19,472,8407,993,608
Events in quadrant D80,122,7246,536,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02062250
B02170840
C02030520
D04065410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020040
B020000
C020020
D020020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9808112101.233674%
B9808217951.830101%
C9807615731.603858%
D980572316323.621975%

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 112546 98125 61 61 0.05% 0.06%
B 112546 98126 74 74 0.07% 0.08%
C 112546 98117 4 4 0.00% 0.00%
D 112546 98110 11269 11269 10.01% 11.49%

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 531016 471.18 5137 5037 1116.3
A 15 192 500058 443.44 5137 5037 1116.3
A 15 236 176894 153.95 5137 5037 1116.3
B 7 220 748541 747.78 5224 5083 994.2
B 0 228 561490 559.64 5224 5083 994.2
B 3 64 453500 451.02 5224 5083 994.2
C 0 10 159815 132.82 4973 4940 1166.1
C 3 233 111954 91.77 4973 4940 1166.1
C 4 223 45128 34.46 4973 4940 1166.1
D 1 239 33876909 32072.41 4481 4314 1056.1
D 1 52 11866208 11231.48 4481 4314 1056.1
D 5 222 3935761 3722.51 4481 4314 1056.1

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