ASTROSAT CZTI

Data Quality Report

Orbit 20180217_A04_224T03_9000001898_level2

Creation date: 2018-07-16T11:31:33.668368
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_224T03_9000001898cztM0_level2_bc.evt modeM0/AS1A04_224T03_9000001898cztM0_level2_quad_clean.evt
Size (bytes)505,903,680253,693,440
Size482.5 MB 241.9 MB
Events in quadrant A3,771,7831,729,384
Events in quadrant B4,669,5471,595,878
Events in quadrant C2,696,8551,738,987
Events in quadrant D3,244,4761,676,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335290
B0398470
C0280510
D0292850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136576464.730175%
B13657216915.881965%
C136572832.072197%
D136573242.372410%

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 15708 13661 3 3 0.02% 0.02%
B 15707 13586 89 89 0.57% 0.66%
C 15708 13660 0 0 0.00% 0.00%
D 15708 13660 14 14 0.09% 0.10%

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 15 223 405834 2631.27 694 681 154.0
A 15 239 352536 2285.12 694 681 154.0
A 1 162 142967 924.08 694 681 154.0
B 4 239 1826344 14901.92 638 623 122.5
B 3 64 263206 2143.26 638 623 122.5
B 0 214 30903 247.15 638 623 122.5
C 8 222 4340 23.81 686 677 153.8
C 13 61 4111 22.32 686 677 153.8
C 12 4 3990 21.53 686 677 153.8
D 1 52 294182 1829.34 692 667 160.4
D 8 195 123614 766.27 692 667 160.4
D 2 14 57053 351.42 692 667 160.4

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