ASTROSAT CZTI

Data Quality Report

Orbit 20200302_A07_101T02_9000003544_level2

Creation date: 2020-03-09T11:07:47.422121
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/AS1A07_101T02_9000003544cztM0_level2_bc.evt modeM0/AS1A07_101T02_9000003544cztM0_level2_quad_clean.evt
Size (bytes)5,644,961,2801,762,073,280
Size5.3 GB 1.6 GB
Events in quadrant A28,105,60111,422,841
Events in quadrant B32,305,31611,550,592
Events in quadrant C28,559,09811,226,426
Events in quadrant D73,190,35310,316,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026420
B026420
C026420
D026420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02716050
B02873080
C02766450
D04613420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12920013541.047988%
B12919925661.986083%
C12919925291.957445%
D1292012119616.405446%

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 155416 129213 0 0 0.00% 0.00%
B 155416 129209 86 86 0.06% 0.07%
C 155416 129210 46 46 0.03% 0.04%
D 155416 128857 3033 3033 1.95% 2.35%

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 188123 117.44 7226 7116 1541.3
A 14 111 123950 75.8 7226 7116 1541.3
A 2 250 73616 43.15 7226 7116 1541.3
B 3 64 3084120 2300.25 7233 7079 1337.7
B 0 197 583214 430.69 7233 7079 1337.7
B 0 189 379311 278.26 7233 7079 1337.7
C 0 10 842410 514.76 6962 6962 1623.0
C 10 9 614949 374.61 6962 6962 1623.0
C 0 239 177959 105.36 6962 6962 1623.0
D 12 218 27171136 18084.37 6515 6312 1502.1
D 8 195 8982565 5975.74 6515 6312 1502.1
D 1 52 7958206 5293.79 6515 6312 1502.1

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