ASTROSAT CZTI

Data Quality Report

Orbit 20151212_P01_997T01_9000000214_level2

Creation date: 2018-05-16T16:32:04.737821
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/AS1P01_997T01_9000000214cztM0_level2.evt modeM0/AS1P01_997T01_9000000214cztM0_level2_quad_clean.evt
Size (bytes)16,324,300,8001,752,834,240
Size15.2 GB 1.6 GB
Events in quadrant A121,116,78911,751,808
Events in quadrant B127,455,34811,820,015
Events in quadrant C125,388,70411,302,322
Events in quadrant D113,667,20211,190,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020880
B020880
C020880
D020880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04326630
B04515410
C04455340
D04112200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1026282730.266009%
B1026293670.357599%
C10262911591.129310%
D10262811181.089371%

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 123600 102649 3266 3266 2.64% 3.18%
B 123600 102651 4087 4087 3.31% 3.98%
C 123600 102652 4595 4595 3.72% 4.48%
D 123600 102651 3693 3693 2.99% 3.60%

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 4 32 180496 19.81 31413 31590 7515.3
A 12 243 166996 18.02 31413 31590 7515.3
A 0 175 142826 14.8 31413 31590 7515.3
B 2 32 1040122 132.71 32529 32678 7591.5
B 15 22 809889 102.38 32529 32678 7591.5
B 8 4 497483 61.23 32529 32678 7591.5
C 15 241 5306556 644.82 29429 30425 8182.4
C 5 234 2569632 310.33 29429 30425 8182.4
C 9 54 1364014 162.98 29429 30425 8182.4
D 2 16 903309 103.74 29529 30087 8417.1
D 10 125 891092 102.29 29529 30087 8417.1
D 7 67 310739 33.34 29529 30087 8417.1

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