ASTROSAT CZTI

Data Quality Report

Orbit 20171006_C03_013T01_9000001586_level2

Creation date: 2017-10-18T19:29:56.341290
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/AS1C03_013T01_9000001586cztM0_level2.evt modeM0/AS1C03_013T01_9000001586cztM0_level2_quad_clean.evt
Size (bytes)2,728,941,120374,788,800
Size2.5 GB 357.4 MB
Events in quadrant A17,956,7112,345,850
Events in quadrant B23,754,3312,311,989
Events in quadrant C15,631,9652,339,630
Events in quadrant D23,108,8312,114,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0734870
B0913300
C0671990
D0899640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A325696792.084805%
B3257124237.439133%
C325712520.773694%
D3256823487.209531%

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 39838 32592 183 183 0.46% 0.56%
B 39838 32589 1441 1441 3.62% 4.42%
C 39838 32593 4 4 0.01% 0.01%
D 39838 32587 1760 1760 4.42% 5.40%

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 8 5 1620866 1965.19 4105 4032 822.7
A 15 174 106161 124.13 4105 4032 822.7
A 8 15 92018 106.94 4105 4032 822.7
B 4 239 7466457 9954.23 4010 3918 749.7
B 0 214 178285 232.59 4010 3918 749.7
B 0 219 133662 173.06 4010 3918 749.7
C 14 234 121362 128.26 3977 3996 915.1
C 13 61 29633 28.02 3977 3996 915.1
C 8 222 14313 11.27 3977 3996 915.1
D 1 52 6526254 6999.07 3853 3743 931.9
D 5 222 746299 796.81 3853 3743 931.9
D 5 97 302920 321.04 3853 3743 931.9

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