ASTROSAT CZTI

Data Quality Report

Orbit 20190615_A05_180T01_9000002992_level2

Creation date: 2021-09-01T10:18:09.504093
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_180T01_9000002992cztM0_level2_bc.evt modeM0/AS1A05_180T01_9000002992cztM0_level2_quad_clean.evt
Size (bytes)18,573,327,3606,096,358,080
Size17.3 GB 5.7 GB
Events in quadrant A131,326,95038,803,588
Events in quadrant B133,450,33440,201,184
Events in quadrant C102,791,77938,868,927
Events in quadrant D166,001,58537,659,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07090
B07090
C07090
D07090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011163230
B010362900
C09303730
D011525050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086660
B086660
C086660
D086660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A425212342078.044693%
B425213182074.281854%
C42521385822.018283%
D425213259416.100707%

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 543476 425133 539 539 0.10% 0.13%
B 543476 425213 2241 2241 0.41% 0.53%
C 543476 425224 58 58 0.01% 0.01%
D 543476 425207 5635 5635 1.04% 1.33%

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 14 238 32595558 6120.66 24163 23794 5321.6
A 14 254 4158874 777.04 24163 23794 5321.6
A 15 192 428216 76.0 24163 23794 5321.6
B 10 245 32925262 6952.34 24704 24308 4732.4
B 4 80 1616838 336.52 24704 24308 4732.4
B 0 198 1039136 214.44 24704 24308 4732.4
C 3 233 9225741 1647.47 23692 23801 5585.5
C 4 254 1986108 351.32 23692 23801 5585.5
C 8 208 348599 58.15 23692 23801 5585.5
D 1 52 53007081 9341.87 24016 23294 5671.6
D 7 238 6569252 1154.15 24016 23294 5671.6
D 12 218 3841192 673.16 24016 23294 5671.6

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