ASTROSAT CZTI

Data Quality Report

Orbit 20201228_A10_058T13_9000004088_level2

Creation date: 2021-01-06T15:03:29.436309
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/AS1A10_058T13_9000004088cztM0_level2_bc.evt modeM0/AS1A10_058T13_9000004088cztM0_level2_quad_clean.evt
Size (bytes)5,232,467,5201,573,516,800
Size4.9 GB 1.5 GB
Events in quadrant A26,492,76310,098,901
Events in quadrant B32,144,96810,250,560
Events in quadrant C25,429,9479,748,125
Events in quadrant D66,019,4069,121,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025080
B025080
C025080
D025080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02584090
B02765380
C02583130
D03899400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02050
C02050
D02050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12316715341.245463%
B12316725372.059805%
C12316722141.797559%
D12316793607.599438%

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 142836 123156 23 23 0.02% 0.02%
B 142836 123153 151 151 0.11% 0.12%
C 142836 123163 6 6 0.00% 0.00%
D 142836 123159 2426 2426 1.70% 1.97%

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 6 16 184549 123.89 6736 6613 1436.3
A 13 254 181827 121.99 6736 6613 1436.3
A 15 174 93690 60.63 6736 6613 1436.3
B 10 245 4910695 3832.53 6829 6657 1279.6
B 0 230 385699 296.22 6829 6657 1279.6
B 10 246 347763 266.58 6829 6657 1279.6
C 7 220 387796 253.05 6471 6443 1507.0
C 1 16 86568 53.17 6471 6443 1507.0
C 13 61 37295 20.47 6471 6443 1507.0
D 8 195 18669477 12856.26 6384 6176 1451.7
D 1 52 18592556 12803.27 6384 6176 1451.7
D 2 250 2661874 1829.38 6384 6176 1451.7

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