ASTROSAT CZTI

Data Quality Report

Orbit 20200910_A09_079T01_9000003864_level2

Creation date: 2021-01-08T11:36:03.508057
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/AS1A09_079T01_9000003864cztM0_level2_bc.evt modeM0/AS1A09_079T01_9000003864cztM0_level2_quad_clean.evt
Size (bytes)11,563,781,7603,335,368,320
Size10.8 GB 3.1 GB
Events in quadrant A71,650,74722,456,540
Events in quadrant B111,336,63221,371,277
Events in quadrant C44,975,82322,597,130
Events in quadrant D108,742,15720,967,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03070
B03070
C03070
D03070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05102200
B06464130
C04258020
D06512580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040580
B040580
C040580
D040600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19888536081.814114%
B1989113363416.909070%
C19888239341.978057%
D1988932238011.252281%

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 230613 198988 32 32 0.01% 0.02%
B 230613 199022 13125 13125 5.69% 6.59%
C 230613 198981 106 106 0.05% 0.05%
D 230613 198979 6358 6358 2.76% 3.20%

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 0 13 29640915 13001.56 10740 10594 2279.0
A 13 254 301369 127.59 10740 10594 2279.0
A 6 16 185967 76.95 10740 10594 2279.0
B 0 189 69546562 37067.34 10051 9825 1876.0
B 10 246 1010347 533.34 10051 9825 1876.0
B 0 229 805339 424.06 10051 9825 1876.0
C 15 208 2364401 932.59 10662 10654 2523.9
C 2 16 964243 377.83 10662 10654 2523.9
C 3 233 383029 147.54 10662 10654 2523.9
D 1 52 28565095 11851.75 10301 10047 2409.4
D 7 80 22615645 9382.43 10301 10047 2409.4
D 15 36 9678446 4012.86 10301 10047 2409.4

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