ASTROSAT CZTI

Data Quality Report

Orbit 20211014_T04_063T01_9000004724_level2

Creation date: 2021-10-20T16:42:13.083090
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/AS1T04_063T01_9000004724cztM0_level2_bc.evt modeM0/AS1T04_063T01_9000004724cztM0_level2_quad_clean.evt
Size (bytes)5,309,807,0401,065,182,400
Size4.9 GB 1015.8 MB
Events in quadrant A42,424,7206,480,892
Events in quadrant B24,181,3357,111,736
Events in quadrant C29,346,4706,852,705
Events in quadrant D59,163,9596,062,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017180
B017180
C017180
D017180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02955650
B01950660
C02101950
D03299890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A838421288715.370578%
B838437610.907649%
C8385018812.243292%
D838401139313.588979%

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 113066 83833 386 386 0.34% 0.46%
B 113066 83850 65 65 0.06% 0.08%
C 113066 83851 316 316 0.28% 0.38%
D 113066 83845 1370 1370 1.21% 1.63%

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 15 249 24197020 26544.25 4133 4089 911.4
A 15 237 1109129 1212.44 4133 4089 911.4
A 0 159 194737 209.18 4133 4089 911.4
B 0 219 1586526 1799.22 4519 4450 879.3
B 3 26 858676 971.47 4519 4450 879.3
B 4 251 797809 902.25 4519 4450 879.3
C 0 10 4714616 4690.47 4325 4306 1004.2
C 3 233 3447692 3428.88 4325 4306 1004.2
C 9 236 2163865 2150.46 4325 4306 1004.2
D 8 195 6463711 6652.14 4094 4016 971.1
D 2 249 6430053 6617.48 4094 4016 971.1
D 7 80 5335310 5490.12 4094 4016 971.1

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