ASTROSAT CZTI

Data Quality Report

Orbit 20191009_A07_006T02_9000003228_level2

Creation date: 2019-10-11T10:31:48.443543
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_006T02_9000003228cztM0_level2_bc.evt modeM0/AS1A07_006T02_9000003228cztM0_level2_quad_clean.evt
Size (bytes)2,270,010,240777,522,240
Size2.1 GB 741.5 MB
Events in quadrant A13,757,0624,925,061
Events in quadrant B14,942,5515,014,480
Events in quadrant C12,279,6864,841,016
Events in quadrant D23,584,3314,560,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01295480
B01338560
C01267280
D01678670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012460
B012460
C012460
D012460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A613807901.287064%
B6138012722.072336%
C6138010591.725318%
D6138037736.146953%

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 70781 61381 6 6 0.01% 0.01%
B 70781 61384 101 101 0.14% 0.16%
C 70781 61379 1 1 0.00% 0.00%
D 70781 61379 282 282 0.40% 0.46%

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 6 16 573977 797.2 3277 3211 716.0
A 14 235 429523 595.44 3277 3211 716.0
A 13 254 111230 150.87 3277 3211 716.0
B 3 64 1206080 1897.56 3333 3247 633.9
B 0 190 190493 295.39 3333 3247 633.9
B 0 230 131457 202.26 3333 3247 633.9
C 10 22 30144 36.06 3178 3158 748.5
C 13 61 18574 20.6 3178 3158 748.5
C 8 128 17222 18.79 3178 3158 748.5
D 7 238 6692013 9140.37 3153 3043 731.8
D 1 52 2497646 3408.83 3153 3043 731.8
D 13 153 743155 1011.35 3153 3043 731.8

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