ASTROSAT CZTI

Data Quality Report

Orbit 20170404_A03_103T01_9000001132_level2

Creation date: 2017-09-23T14:43:34.506210
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_103T01_9000001132cztM0_level2.evt modeM0/AS1A03_103T01_9000001132cztM0_level2_quad_clean.evt
Size (bytes)2,954,240,640813,582,720
Size2.8 GB 775.9 MB
Events in quadrant A20,282,0005,517,672
Events in quadrant B21,252,5685,584,265
Events in quadrant C19,323,3785,450,390
Events in quadrant D25,654,3905,087,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0909620
B0928160
C0895100
D01082290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A437736041.379846%
B437726421.466691%
C437734090.934366%
D4377323105.277226%

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 52238 43775 83 83 0.16% 0.19%
B 52238 43775 75 75 0.14% 0.17%
C 52238 43776 0 0 0.00% 0.00%
D 52238 43775 1774 1774 3.40% 4.05%

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 2 373911 359.23 5131 5028 1026.9
A 13 170 64314 57.73 5131 5028 1026.9
A 8 15 55237 48.9 5131 5028 1026.9
B 0 214 462732 476.8 5147 5026 960.0
B 10 16 364774 374.76 5147 5026 960.0
B 4 81 181225 183.55 5147 5026 960.0
C 13 61 37973 29.44 4942 4955 1121.4
C 1 0 21214 14.5 4942 4955 1121.4
C 8 128 18475 12.06 4942 4955 1121.4
D 1 52 5419025 4651.37 4813 4662 1164.0
D 12 233 782378 668.12 4813 4662 1164.0
D 2 152 436530 371.01 4813 4662 1164.0

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