ASTROSAT CZTI

Data Quality Report

Orbit 20190911_C04_001T01_9000003156_level2

Creation date: 2019-09-18T15:08:41.294875
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/AS1C04_001T01_9000003156cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000003156cztM0_level2_quad_clean.evt
Size (bytes)3,843,996,4801,412,294,400
Size3.6 GB 1.3 GB
Events in quadrant A21,824,3279,472,770
Events in quadrant B20,808,6759,552,067
Events in quadrant C29,290,9228,890,563
Events in quadrant D38,424,3028,751,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01924470
B01907360
C02251130
D02500040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018140
B018140
C018140
D018140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8915512041.350457%
B8915610011.122751%
C8915542144.726600%
D8915557086.402333%

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 110535 89147 188 188 0.17% 0.21%
B 110535 89150 62 62 0.06% 0.07%
C 110535 89145 52 52 0.05% 0.06%
D 110535 89146 2258 2258 2.04% 2.53%

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 1814468 1762.82 4713 4641 1026.7
A 5 168 1144956 1110.7 4713 4641 1026.7
A 12 96 276880 265.17 4713 4641 1026.7
B 3 64 481512 527.41 4720 4609 904.2
B 0 230 416120 455.09 4720 4609 904.2
B 0 189 350216 382.21 4720 4609 904.2
C 3 233 12088577 11451.96 4428 4413 1055.2
C 10 91 125931 115.16 4428 4413 1055.2
C 13 61 25855 20.32 4428 4413 1055.2
D 1 52 14484056 13630.74 4538 4389 1062.3
D 12 235 1933013 1815.55 4538 4389 1062.3
D 13 174 967099 906.27 4538 4389 1062.3

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