ASTROSAT CZTI

Data Quality Report

Orbit 20191010_A07_004T01_9000003230_level2

Creation date: 2019-10-14T13:10:28.897113
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_004T01_9000003230cztM0_level2_bc.evt modeM0/AS1A07_004T01_9000003230cztM0_level2_quad_clean.evt
Size (bytes)8,519,204,1603,124,103,040
Size7.9 GB 2.9 GB
Events in quadrant A53,856,94919,732,160
Events in quadrant B60,444,37320,096,647
Events in quadrant C48,916,20719,427,910
Events in quadrant D78,098,67718,584,077

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050020
B050020
C050020
D050020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05177860
B05383800
C05075410
D05991190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24511635811.460941%
B24511647411.934186%
C24511638571.573541%
D24511665852.686483%

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 286357 245107 264 264 0.09% 0.11%
B 286357 245103 449 449 0.16% 0.18%
C 286357 245102 1 1 0.00% 0.00%
D 286357 245106 751 751 0.26% 0.31%

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 4 2 1228968 429.56 13014 12769 2831.3
A 5 16 888613 309.35 13014 12769 2831.3
A 14 235 885753 308.34 13014 12769 2831.3
B 3 64 4737666 1897.52 13219 12886 2490.0
B 0 230 938551 371.76 13219 12886 2490.0
B 0 245 928950 367.9 13219 12886 2490.0
C 3 248 163407 51.28 12578 12514 2942.7
C 4 175 101432 30.22 12578 12514 2942.7
C 5 112 94479 27.85 12578 12514 2942.7
D 1 52 15174815 4746.74 12559 12182 3194.3
D 7 238 3387994 1056.81 12559 12182 3194.3
D 13 174 3305650 1031.04 12559 12182 3194.3

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