ASTROSAT CZTI

Data Quality Report

Orbit 20180329_A04_048T01_9000001992_level2

Creation date: 2018-03-31T12:42:24.884487
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/AS1A04_048T01_9000001992cztM0_level2_bc.evt modeM0/AS1A04_048T01_9000001992cztM0_level2_quad_clean.evt
Size (bytes)1,789,568,640675,100,800
Size1.7 GB 643.8 MB
Events in quadrant A11,012,6324,225,385
Events in quadrant B12,114,7174,290,401
Events in quadrant C14,256,7164,192,100
Events in quadrant D13,093,3383,998,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011100
B011100
C011100
D011100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01121640
B01158720
C01197170
D01204250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545402910.533553%
B545406501.191786%
C545384280.784774%
D545408541.565823%

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 62176 54536 2 2 0.00% 0.00%
B 62176 54534 23 23 0.04% 0.04%
C 62176 54536 17 17 0.03% 0.03%
D 62176 54534 5 5 0.01% 0.01%

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 1 162 71266 112.54 2816 2762 608.7
A 2 250 55511 86.66 2816 2762 608.7
A 8 15 27392 40.46 2816 2762 608.7
B 3 64 360556 673.58 2848 2773 531.2
B 4 142 184934 342.95 2848 2773 531.2
B 4 173 155025 286.64 2848 2773 531.2
C 3 233 3338422 5502.06 2780 2750 606.3
C 13 61 16331 22.4 2780 2750 606.3
C 14 234 15700 21.36 2780 2750 606.3
D 13 104 702006 1116.22 2758 2666 626.5
D 13 122 589224 936.21 2758 2666 626.5
D 8 195 443402 703.46 2758 2666 626.5

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