ASTROSAT CZTI

Data Quality Report

Orbit 34663

Creation date: 2024-06-27T21:03:22.130497
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/AS1T05_008T01_9000004956_34663cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34663cztM0_level2_quad_clean.evt
Size (bytes)513,492,48072,984,960
Size489.7 MB 69.6 MB
Events in quadrant A2,581,420467,861
Events in quadrant B4,003,544453,861
Events in quadrant C2,890,280471,897
Events in quadrant D5,699,965428,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114943
B0155862
C0119942
D0206982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5550220.396396%
B55504518.126126%
C5550530.954955%
D555057010.270270%

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 8625 5552 10 10 0.12% 0.18%
B 8625 5552 309 309 3.58% 5.57%
C 8625 5552 29 29 0.34% 0.52%
D 8625 5552 432 432 5.01% 7.78%

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 15 174 55077 432.61 629 617 125.9
A 10 83 46333 363.15 629 617 125.9
A 7 16 34682 270.6 629 617 125.9
B 5 172 1160708 9966.63 608 592 116.4
B 5 255 375264 3218.83 608 592 116.4
B 4 232 23871 199.99 608 592 116.4
C 15 214 234510 1650.47 611 616 141.7
C 0 10 170515 1198.89 611 616 141.7
C 14 67 83200 582.75 611 616 141.7
D 8 195 2126920 14920.06 581 563 142.5
D 2 249 499019 3497.53 581 563 142.5
D 12 233 385796 2703.07 581 563 142.5

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