ASTROSAT CZTI

Data Quality Report

Orbit 20200809_A09_008T02_9000003796_level2

Creation date: 2021-01-09T08:58:11.152597
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/AS1A09_008T02_9000003796cztM0_level2_bc.evt modeM0/AS1A09_008T02_9000003796cztM0_level2_quad_clean.evt
Size (bytes)8,633,655,3603,080,710,080
Size8.0 GB 2.9 GB
Events in quadrant A41,480,99020,667,417
Events in quadrant B42,896,03621,152,970
Events in quadrant C59,297,46120,053,577
Events in quadrant D104,487,73618,043,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039860
B039860
C039860
D039860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04045280
B04094420
C04806510
D06816600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03230
B03230
C03230
D03230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19549520201.033275%
B19549426881.374978%
C195492104745.357764%
D1954933307716.919787%

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 236776 195501 0 0 0.00% 0.00%
B 236776 195497 38 38 0.02% 0.02%
C 236776 195495 305 305 0.13% 0.16%
D 236776 195383 7010 7010 2.96% 3.59%

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 13 254 290228 123.1 10640 10483 2272.5
A 6 16 199701 83.26 10640 10483 2272.5
A 7 192 110538 44.03 10640 10483 2272.5
B 0 230 453187 221.75 10781 10558 1996.0
B 3 64 385639 187.91 10781 10558 1996.0
B 12 16 265914 127.93 10781 10558 1996.0
C 3 233 12014567 4940.77 10236 10218 2429.6
C 4 254 5563640 2285.69 10236 10218 2429.6
C 2 16 2069259 847.46 10236 10218 2429.6
D 1 52 60751467 27743.05 9462 9223 2189.5
D 11 176 2612573 1189.04 9462 9223 2189.5
D 12 233 2611852 1188.71 9462 9223 2189.5

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