ASTROSAT CZTI

Data Quality Report

Orbit 20170429_A03_102T01_9000001202_level2

Creation date: 2018-05-18T02:02:01.795323
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_102T01_9000001202cztM0_level2.evt modeM0/AS1A03_102T01_9000001202cztM0_level2_quad_clean.evt
Size (bytes)10,914,598,0802,656,552,320
Size10.2 GB 2.5 GB
Events in quadrant A78,800,69917,264,054
Events in quadrant B84,489,13217,802,624
Events in quadrant C72,447,79617,434,851
Events in quadrant D83,604,61316,597,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02470
B02470
C02470
D02480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033840
B033820
C033840
D033800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03530640
B03637770
C03380810
D03703340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16602429161.756373%
B16602131121.874462%
C16603113000.782986%
D16602637122.235794%

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 194880 166076 770 770 0.40% 0.46%
B 194880 166070 815 815 0.42% 0.49%
C 194880 166080 4 4 0.00% 0.00%
D 194880 166075 2188 2188 1.12% 1.32%

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 15 223 1891470 500.2 18785 18368 3744.7
A 13 248 1369533 360.82 18785 18368 3744.7
A 5 16 1096771 287.98 18785 18368 3744.7
B 0 214 2367754 662.38 19065 18605 3546.5
B 10 16 2164144 604.97 19065 18605 3546.5
B 5 255 1209258 335.72 19065 18605 3546.5
C 13 61 141032 28.99 18479 18526 4226.1
C 14 67 112344 22.2 18479 18526 4226.1
C 8 222 101409 19.61 18479 18526 4226.1
D 12 233 2475669 510.85 18144 17725 4811.5
D 1 52 2466193 508.88 18144 17725 4811.5
D 13 105 2115142 435.92 18144 17725 4811.5

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