ASTROSAT CZTI

Data Quality Report

Orbit 20190319_A05_088T03_9000002808_level2

Creation date: 2019-03-20T13:08:32.969193
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_088T03_9000002808cztM0_level2_bc.evt modeM0/AS1A05_088T03_9000002808cztM0_level2_quad_clean.evt
Size (bytes)1,450,082,880518,408,640
Size1.4 GB 494.4 MB
Events in quadrant A12,454,4113,256,119
Events in quadrant B9,474,3953,331,649
Events in quadrant C8,234,8293,244,488
Events in quadrant D11,097,8103,198,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0937640
B0860050
C0816680
D0897400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07900
B07900
C07900
D07900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3891813473.461123%
B389187842.014492%
C389187671.970810%
D389187912.032479%

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 46568 38922 504 504 1.08% 1.29%
B 46568 38920 4 4 0.01% 0.01%
C 46568 38919 2 2 0.00% 0.01%
D 46568 38919 60 60 0.13% 0.15%

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 6 16 3879997 8189.97 2184 2147 473.5
A 13 254 59963 122.11 2184 2147 473.5
A 15 192 55391 112.45 2184 2147 473.5
B 7 220 465893 1135.66 2198 2153 408.3
B 0 229 160165 386.96 2198 2153 408.3
B 0 197 156880 378.91 2198 2153 408.3
C 0 207 53694 105.76 2109 2106 487.8
C 3 233 52843 104.02 2109 2106 487.8
C 6 96 17411 31.38 2109 2106 487.8
D 1 52 1197454 2436.53 2169 2104 490.6
D 14 34 1017289 2069.29 2169 2104 490.6
D 2 234 197675 398.64 2169 2104 490.6

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