ASTROSAT CZTI

Data Quality Report

Orbit 20181206_A05_185T04_9000002552_level2

Creation date: 2018-12-11T14:56:06.567806
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/AS1A05_185T04_9000002552cztM0_level2_bc.evt modeM0/AS1A05_185T04_9000002552cztM0_level2_quad_clean.evt
Size (bytes)1,641,925,440689,546,880
Size1.5 GB 657.6 MB
Events in quadrant A11,333,6924,449,815
Events in quadrant B11,448,4224,440,143
Events in quadrant C10,501,8034,212,359
Events in quadrant D12,846,6534,169,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010680
B010680
C010680
D010680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01094210
B01111140
C01086890
D01154610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526933810.723056%
B526935130.973564%
C526935841.108307%
D526928131.542929%

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 67247 52695 4 4 0.01% 0.01%
B 67247 52694 4 4 0.01% 0.01%
C 67247 52697 0 0 0.00% 0.00%
D 67247 52692 100 100 0.15% 0.19%

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 23 528642 871.24 2780 2729 603.6
A 15 174 101918 164.32 2780 2729 603.6
A 0 226 48939 76.55 2780 2729 603.6
B 0 189 172882 326.72 2781 2712 520.8
B 7 220 169740 320.69 2781 2712 520.8
B 0 197 124197 233.25 2781 2712 520.8
C 3 233 274381 440.53 2643 2627 616.9
C 1 16 38152 57.59 2643 2627 616.9
C 13 61 15745 21.27 2643 2627 616.9
D 1 52 772051 1240.58 2722 2641 620.2
D 10 70 611212 981.25 2722 2641 620.2
D 13 189 553165 887.66 2722 2641 620.2

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