ASTROSAT CZTI

Data Quality Report

Orbit 20190319_A05_024T01_9000002810_level2

Creation date: 2019-03-22T12:40:25.247485
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_024T01_9000002810cztM0_level2_bc.evt modeM0/AS1A05_024T01_9000002810cztM0_level2_quad_clean.evt
Size (bytes)4,654,906,5601,721,943,360
Size4.3 GB 1.6 GB
Events in quadrant A30,389,84010,919,299
Events in quadrant B30,558,01511,111,472
Events in quadrant C30,038,36310,640,350
Events in quadrant D40,902,50710,345,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027140
B027140
C027140
D027140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02835720
B02857890
C02883590
D03212080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13341817911.342398%
B13341819521.463071%
C13341824331.823592%
D13341839232.940383%

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 156183 133423 158 158 0.10% 0.12%
B 156183 133421 16 16 0.01% 0.01%
C 156183 133418 54 54 0.03% 0.04%
D 156183 133419 498 498 0.32% 0.37%

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 1480188 947.18 7238 7114 1555.2
A 0 254 486655 308.34 7238 7114 1555.2
A 13 254 201773 125.16 7238 7114 1555.2
B 7 220 635824 465.58 7302 7128 1350.4
B 6 36 395550 287.64 7302 7128 1350.4
B 0 197 298690 215.92 7302 7128 1350.4
C 3 233 2254381 1371.28 7020 6997 1638.9
C 9 54 635886 383.73 7020 6997 1638.9
C 6 96 71363 39.27 7020 6997 1638.9
D 1 52 6223215 3788.93 7112 6883 1640.7
D 5 222 5008082 3048.29 7112 6883 1640.7
D 12 110 621120 374.38 7112 6883 1640.7

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