ASTROSAT CZTI

Data Quality Report

Orbit 20190313_A05_072T04_9000002794_level2

Creation date: 2019-03-15T11:51:25.125669
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/AS1A05_072T04_9000002794cztM0_level2_bc.evt modeM0/AS1A05_072T04_9000002794cztM0_level2_quad_clean.evt
Size (bytes)2,776,259,520981,800,640
Size2.6 GB 936.3 MB
Events in quadrant A16,817,1546,206,725
Events in quadrant B17,316,1226,309,887
Events in quadrant C17,777,0326,141,077
Events in quadrant D27,071,9875,950,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015240
B015240
C015240
D015240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01594700
B01622080
C01659020
D01951270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7481010471.399546%
B7481012371.653522%
C7481017762.374014%
D7481030414.064965%

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 87231 74809 51 51 0.06% 0.07%
B 87231 74808 34 34 0.04% 0.05%
C 87231 74812 31 31 0.04% 0.04%
D 87231 74812 691 691 0.79% 0.92%

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 0 13 454566 518.15 4048 3975 869.6
A 6 16 385012 438.17 4048 3975 869.6
A 9 143 221415 250.04 4048 3975 869.6
B 7 220 418490 548.31 4085 3988 756.0
B 10 245 287100 374.5 4085 3988 756.0
B 0 197 170688 220.51 4085 3988 756.0
C 9 54 1165500 1281.47 3918 3904 906.5
C 3 233 876341 962.47 3918 3904 906.5
C 5 112 321017 349.84 3918 3904 906.5
D 1 52 6977355 7566.76 3978 3841 921.6
D 7 238 3511019 3805.54 3978 3841 921.6
D 12 110 982917 1062.37 3978 3841 921.6

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