ASTROSAT CZTI

Data Quality Report

Orbit 20160321_T01_107T01_9000000386_level2

Creation date: 2016-09-06T17:51:59.340296
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_107T01_9000000386cztM0_level2_bc.evt modeM0/AS1T01_107T01_9000000386cztM0_level2_quad_clean.evt
Size (bytes)390,182,400153,305,280
Size372.1 MB 146.2 MB
Events in quadrant A2,457,607940,759
Events in quadrant B2,577,322956,919
Events in quadrant C3,141,672929,845
Events in quadrant D2,731,402902,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267930
B0269500
C0289220
D0275280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13224360.272232%
B13224400.302480%
C132241891.429220%
D13224380.287356%

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 15449 13224 3 3 0.02% 0.02%
B 15449 13224 0 0 0.00% 0.00%
C 15448 13224 81 81 0.52% 0.61%
D 15448 13223 3 3 0.02% 0.02%

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 0 149 28818 200.86 626 609 140.4
A 0 226 7607 49.83 626 609 140.4
A 3 1 7581 49.64 626 609 140.4
B 0 189 44909 377.98 637 617 117.2
B 6 36 37979 318.84 637 617 117.2
B 10 244 14010 114.29 637 617 117.2
C 2 53 568324 4221.06 606 596 134.5
C 9 70 167715 1242.53 606 596 134.5
C 12 4 13006 92.27 606 596 134.5
D 2 136 101035 710.53 603 582 141.4
D 2 54 82868 582.03 603 582 141.4
D 5 172 49578 346.56 603 582 141.4

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