ASTROSAT CZTI

Data Quality Report

Orbit 20160429_G05_127T01_9000000436_level2

Creation date: 2016-09-06T17:50:53.711608
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/AS1G05_127T01_9000000436cztM0_level2_bc.evt modeM0/AS1G05_127T01_9000000436cztM0_level2_quad_clean.evt
Size (bytes)4,771,267,2001,100,373,120
Size4.4 GB 1.0 GB
Events in quadrant A19,553,3977,063,469
Events in quadrant B21,294,6327,100,961
Events in quadrant C74,605,2635,980,640
Events in quadrant D22,691,8456,778,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018960
B018960
C018960
D018960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01966680
B02020190
C04113490
D02064060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9336015331.642031%
B9336015901.703085%
C933602375425.443445%
D9336016341.750214%

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 107964 93357 11 11 0.01% 0.01%
B 107964 93349 20 20 0.02% 0.02%
C 107964 93195 5677 5677 5.26% 6.09%
D 107964 93355 109 109 0.10% 0.12%

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 14 249 796278 765.55 4674 4599 1034.1
A 0 118 240788 228.39 4674 4599 1034.1
A 8 15 91921 84.44 4674 4599 1034.1
B 4 80 1015222 1102.73 4733 4618 916.5
B 4 81 335187 360.7 4733 4618 916.5
B 2 249 287453 308.62 4733 4618 916.5
C 12 206 52474177 59137.33 3927 3884 887.3
C 1 192 4547364 5120.79 3927 3884 887.3
C 14 223 1037556 1165.01 3927 3884 887.3
D 13 223 1461872 1331.16 4591 4424 1094.9
D 5 233 906424 823.84 4591 4424 1094.9
D 13 120 737272 669.34 4591 4424 1094.9

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