ASTROSAT CZTI

Data Quality Report

Orbit 20190725_A05_229T02_9000003060_level2

Creation date: 2021-08-29T04:34:42.774101
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/AS1A05_229T02_9000003060cztM0_level2_bc.evt modeM0/AS1A05_229T02_9000003060cztM0_level2_quad_clean.evt
Size (bytes)6,064,966,0802,292,108,480
Size5.6 GB 2.1 GB
Events in quadrant A36,425,44714,950,738
Events in quadrant B40,274,17814,928,185
Events in quadrant C34,912,61714,497,466
Events in quadrant D60,912,55713,827,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460780
B03664140
C03454490
D04262640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033360
B033380
C033340
D033340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16385616270.992945%
B16386229081.774664%
C16385721761.327987%
D16385175424.602962%

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 192471 163990 110 110 0.06% 0.07%
B 192471 163992 33 33 0.02% 0.02%
C 192472 163983 7 7 0.00% 0.00%
D 192472 163982 2296 2296 1.19% 1.40%

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 5 16 1317454 672.22 9000 8850 1946.7
A 9 143 368093 184.54 9000 8850 1946.7
A 8 205 102743 48.23 9000 8850 1946.7
B 7 220 3377946 1988.08 9002 8798 1694.7
B 0 197 506493 293.68 9002 8798 1694.7
B 0 190 400516 231.15 9002 8798 1694.7
C 3 233 658508 321.37 8611 8596 2022.3
C 8 208 440013 213.33 8611 8596 2022.3
C 7 247 354388 170.99 8611 8596 2022.3
D 1 52 14383205 7189.93 8681 8404 1999.3
D 1 20 4203032 2098.05 8681 8404 1999.3
D 12 227 3187842 1590.28 8681 8404 1999.3

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