ASTROSAT CZTI

Data Quality Report

Orbit 20190828_A06_009T02_9000003130_level2

Creation date: 2019-08-29T17:00:37.486539
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/AS1A06_009T02_9000003130cztM0_level2_bc.evt modeM0/AS1A06_009T02_9000003130cztM0_level2_quad_clean.evt
Size (bytes)391,976,640123,471,360
Size373.8 MB 117.8 MB
Events in quadrant A2,198,312802,597
Events in quadrant B2,186,907803,959
Events in quadrant C1,853,228774,083
Events in quadrant D5,008,836729,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201090
B0199180
C0191070
D0294220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90601191.313466%
B9060820.905077%
C9060981.081678%
D90604444.900662%

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 11170 9059 6 6 0.05% 0.07%
B 11170 9060 2 2 0.02% 0.02%
C 11170 9060 0 0 0.00% 0.00%
D 11170 9060 75 75 0.67% 0.83%

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 5 16 195394 1780.02 491 483 109.5
A 10 229 81684 741.57 491 483 109.5
A 13 254 13161 115.78 491 483 109.5
B 0 189 69871 714.95 493 480 97.1
B 0 229 36267 368.72 493 480 97.1
B 3 64 33637 341.62 493 480 97.1
C 3 233 46913 409.01 468 464 113.6
C 0 10 3766 29.08 468 464 113.6
C 13 61 2788 20.46 468 464 113.6
D 1 20 1392968 12563.34 469 454 110.8
D 1 52 926842 8357.93 469 454 110.8
D 7 238 306777 2763.66 469 454 110.8

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