ASTROSAT CZTI

Data Quality Report

Orbit 20191129_A07_148T05_9000003346_level2

Creation date: 2019-12-02T14:17:23.897246
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/AS1A07_148T05_9000003346cztM0_level2_bc.evt modeM0/AS1A07_148T05_9000003346cztM0_level2_quad_clean.evt
Size (bytes)4,095,146,8801,515,741,120
Size3.8 GB 1.4 GB
Events in quadrant A25,818,1389,548,478
Events in quadrant B27,457,5679,721,000
Events in quadrant C25,580,1149,406,243
Events in quadrant D37,042,1719,063,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02513510
B02596530
C02545980
D02933640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024200
B024200
C024200
D024200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11927813401.123426%
B11927818881.582857%
C11927821871.833532%
D11927841653.491843%

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 139911 119276 0 0 0.00% 0.00%
B 139911 119275 19 19 0.01% 0.02%
C 139911 119274 5 5 0.00% 0.00%
D 139911 119277 801 801 0.57% 0.67%

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 13 34 287334 198.92 6580 6461 1412.0
A 13 254 188104 128.64 6580 6461 1412.0
A 4 2 108767 72.46 6580 6461 1412.0
B 15 33 1178356 953.29 6627 6466 1229.3
B 5 172 228103 180.29 6627 6466 1229.3
B 0 190 183901 144.34 6627 6466 1229.3
C 0 207 650134 430.91 6410 6397 1493.9
C 10 22 147561 94.49 6410 6397 1493.9
C 0 10 131132 83.5 6410 6397 1493.9
D 1 52 6332974 4257.46 6466 6251 1486.0
D 7 223 2722943 1828.15 6466 6251 1486.0
D 12 33 1076081 719.92 6466 6251 1486.0

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