ASTROSAT CZTI

Data Quality Report

Orbit 20160127_G02_025T01_9000000298_level2

Creation date: 2018-05-16T21:49:36.410660
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/AS1G02_025T01_9000000298cztM0_level2.evt modeM0/AS1G02_025T01_9000000298cztM0_level2_quad_clean.evt
Size (bytes)16,412,137,9201,231,427,520
Size15.3 GB 1.1 GB
Events in quadrant A123,701,2417,740,949
Events in quadrant B125,135,4157,905,828
Events in quadrant C117,378,7517,549,449
Events in quadrant D124,216,7897,212,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020120
B020120
C020120
D020120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04388570
B04429870
C04201610
D04410350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B1180
C1180
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1005555950.591716%
B1005574980.495242%
C1005593530.351038%
D10055923832.369753%

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 113885 100576 4154 4154 3.65% 4.13%
B 113885 100577 4118 4118 3.62% 4.09%
C 113885 100582 3092 3092 2.72% 3.07%
D 113885 100579 6945 6945 6.10% 6.91%

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 0 231 2850620 372.34 31455 31643 7571.0
A 15 236 195241 21.61 31455 31643 7571.0
A 14 5 152312 15.94 31455 31643 7571.0
B 0 234 374850 44.57 32760 32904 7672.0
B 0 220 368872 43.79 32760 32904 7672.0
B 4 200 122342 11.66 32760 32904 7672.0
C 8 208 1393434 164.73 29635 30685 8272.7
C 14 223 186469 18.83 29635 30685 8272.7
C 9 236 132254 12.28 29635 30685 8272.7
D 7 85 3853737 431.73 28637 29729 8857.3
D 1 83 3061333 342.27 28637 29729 8857.3
D 10 181 2505160 279.48 28637 29729 8857.3

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