ASTROSAT CZTI

Data Quality Report

Orbit 20210703_A10_058T02_9000004510_level2

Creation date: 2021-07-06T19:56:06.471433
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_058T02_9000004510cztM0_level2_bc.evt modeM0/AS1A10_058T02_9000004510cztM0_level2_quad_clean.evt
Size (bytes)5,895,167,0401,423,048,320
Size5.5 GB 1.3 GB
Events in quadrant A24,330,6419,129,303
Events in quadrant B57,583,4508,990,255
Events in quadrant C25,230,6298,718,345
Events in quadrant D63,764,9128,560,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02359980
B03560830
C02438910
D03636110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022920
B022920
C022920
D022920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11243310580.941005%
B11243344753.980148%
C11243330112.678039%
D11243330722.732294%

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 128233 112438 9 9 0.01% 0.01%
B 128233 112434 52 52 0.04% 0.05%
C 128233 112438 19 19 0.01% 0.02%
D 128233 112434 176 176 0.14% 0.16%

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 12 96 338599 250.06 6211 6108 1329.7
A 13 254 190660 138.8 6211 6108 1329.7
A 0 226 38433 24.31 6211 6108 1329.7
B 6 159 29425626 25601.24 6135 6000 1149.1
B 4 80 3040266 2640.45 6135 6000 1149.1
B 0 190 485761 417.49 6135 6000 1149.1
C 0 10 1428136 1027.98 5888 5872 1383.5
C 10 22 558553 399.47 5888 5872 1383.5
C 2 114 206757 145.2 5888 5872 1383.5
D 8 195 37152252 24406.65 5977 5833 1522.0
D 12 79 1259169 823.49 5977 5833 1522.0
D 2 250 715871 466.52 5977 5833 1522.0

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