ASTROSAT CZTI

Data Quality Report

Orbit 20170614_A03_091T05_9000001300_level2

Creation date: 2017-09-24T05:02:27.355624
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/AS1A03_091T05_9000001300cztM0_level2.evt modeM0/AS1A03_091T05_9000001300cztM0_level2_quad_clean.evt
Size (bytes)2,524,504,320400,691,520
Size2.4 GB 382.1 MB
Events in quadrant A22,273,3562,436,281
Events in quadrant B17,252,8932,537,922
Events in quadrant C16,042,4202,458,975
Events in quadrant D18,575,5342,350,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883430
B0732970
C0708090
D0783260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06980
B06900
C06980
D06980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3423114224.154129%
B342526351.853906%
C342623481.015703%
D342486902.014716%

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 40419 34351 705 705 1.74% 2.05%
B 40419 34350 26 26 0.06% 0.08%
C 40419 34351 11 11 0.03% 0.03%
D 40419 34350 327 327 0.81% 0.95%

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 8 5 3075397 3723.95 4097 4017 824.8
A 5 16 2273699 2751.92 4097 4017 824.8
A 4 2 279869 334.46 4097 4017 824.8
B 0 214 417941 526.61 4179 4086 785.9
B 0 219 165428 205.3 4179 4086 785.9
B 0 245 118467 145.54 4179 4086 785.9
C 9 68 245491 259.59 4026 4040 930.1
C 14 234 67426 68.15 4026 4040 930.1
C 13 61 30417 28.36 4026 4040 930.1
D 1 52 1565171 1500.08 3967 3877 1040.8
D 12 233 669120 639.16 3967 3877 1040.8
D 2 136 602184 574.85 3967 3877 1040.8

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