ASTROSAT CZTI

Data Quality Report

Orbit 20170923_A03_064T01_9000001548_level2

Creation date: 2017-10-18T15:53:05.574515
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_064T01_9000001548cztM0_level2.evt modeM0/AS1A03_064T01_9000001548cztM0_level2_quad_clean.evt
Size (bytes)2,279,658,240329,284,800
Size2.1 GB 314.0 MB
Events in quadrant A12,904,3832,110,310
Events in quadrant B17,167,3132,110,507
Events in quadrant C11,886,1932,133,785
Events in quadrant D25,430,6951,930,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543250
B0672750
C0513280
D0924420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245245012.042897%
B2452511984.884811%
C245252741.117227%
D24525379215.461774%

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 30350 24526 135 135 0.44% 0.55%
B 30350 24526 475 475 1.57% 1.94%
C 30350 24528 0 0 0.00% 0.00%
D 30350 24527 3133 3133 10.32% 12.77%

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 15 239 420044 675.3 3081 3023 617.5
A 15 223 183826 292.78 3081 3023 617.5
A 15 174 155174 246.38 3081 3023 617.5
B 4 239 2791519 4863.6 3067 3001 573.3
B 0 85 1498225 2607.9 3067 3001 573.3
B 4 81 412258 713.81 3067 3001 573.3
C 13 61 22592 27.92 3042 3069 699.1
C 8 128 13381 14.75 3042 3069 699.1
C 14 234 11070 11.44 3042 3069 699.1
D 2 16 11620302 16956.89 2863 2786 685.1
D 10 157 1188448 1730.59 2863 2786 685.1
D 1 52 541834 786.79 2863 2786 685.1

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