ASTROSAT CZTI

Data Quality Report

Orbit 20191124_A07_144T02_9000003340_level2

Creation date: 2019-11-28T15:23:12.337324
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_144T02_9000003340cztM0_level2_bc.evt modeM0/AS1A07_144T02_9000003340cztM0_level2_quad_clean.evt
Size (bytes)6,270,557,7602,222,173,440
Size5.8 GB 2.1 GB
Events in quadrant A42,601,42115,935,186
Events in quadrant B45,163,22316,230,078
Events in quadrant C17,456,1066,159,550
Events in quadrant D70,878,08815,178,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040980
B040980
C040980
D040980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04219540
B04336920
C02948840
D05146390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20102121251.057103%
B20102231671.575449%
C20085211899659.245614%
D20101472773.620146%

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 236990 201015 2 2 0.00% 0.00%
B 236990 201001 33 33 0.01% 0.02%
C 236990 83662 0 0 0.00% 0.00%
D 236990 201008 1481 1481 0.62% 0.74%

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 15 174 283851 117.32 10821 10619 2329.0
A 13 254 282581 116.77 10821 10619 2329.0
A 3 1 258302 106.35 10821 10619 2329.0
B 15 33 1004131 490.94 10942 10678 2023.6
B 5 172 421106 202.82 10942 10678 2023.6
B 0 190 416090 200.34 10942 10678 2023.6
C 10 22 320114 304.31 4421 4400 1037.5
C 0 10 108801 100.63 4421 4400 1037.5
C 9 54 36878 31.3 4421 4400 1037.5
D 1 52 20474055 8304.57 10616 10255 2464.2
D 1 20 3478940 1407.65 10616 10255 2464.2
D 2 136 1693121 682.94 10616 10255 2464.2

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