ASTROSAT CZTI

Data Quality Report

Orbit 20160207_T01_052T01_9000000316_level2

Creation date: 2018-05-17T02:13:13.328745
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/AS1T01_052T01_9000000316cztM0_level2.evt modeM0/AS1T01_052T01_9000000316cztM0_level2_quad_clean.evt
Size (bytes)20,294,277,1201,142,251,200
Size18.9 GB 1.1 GB
Events in quadrant A154,947,0546,595,789
Events in quadrant B155,101,6486,792,032
Events in quadrant C146,003,9206,628,063
Events in quadrant D150,476,4006,150,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05475480
B05479860
C05211400
D05354780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B1190
C1190
D110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024620
B024620
C024620
D024620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12298717081.388765%
B1229817640.621234%
C1229814410.358592%
D12298152924.303104%

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 143102 123008 6622 6622 4.63% 5.38%
B 143102 123007 5445 5445 3.80% 4.43%
C 143102 123008 4575 4575 3.20% 3.72%
D 143102 123006 9931 9931 6.94% 8.07%

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 5 3418185 362.56 38674 39025 9320.3
A 12 236 1580211 165.36 38674 39025 9320.3
A 0 231 1438449 150.15 38674 39025 9320.3
B 5 68 299216 27.29 40622 40815 9469.9
B 0 220 269806 24.18 40622 40815 9469.9
B 15 85 224262 19.37 40622 40815 9469.9
C 9 85 1988093 190.65 36771 38086 10228.1
C 9 54 301928 25.8 36771 38086 10228.1
C 14 223 203482 16.17 36771 38086 10228.1
D 13 169 14115038 1305.65 34861 36195 10783.0
D 10 166 2608088 238.51 34861 36195 10783.0
D 9 66 1508669 136.55 34861 36195 10783.0

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