ASTROSAT CZTI

Data Quality Report

Orbit 33336

Creation date: 2024-06-27T20:48:00.708612
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/AS1A10_090T11_9000004784_33336cztM0_level2.evt modeM0/AS1A10_090T11_9000004784_33336cztM0_level2_quad_clean.evt
Size (bytes)690,523,20089,254,080
Size658.5 MB 85.1 MB
Events in quadrant A2,850,474630,601
Events in quadrant B4,408,665601,923
Events in quadrant C6,606,129556,761
Events in quadrant D6,711,169562,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117383
B0166742
C0232662
D0234882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4999180.360072%
B499956211.242248%
C499996719.343869%
D499965913.182637%

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 7091 5000 1 1 0.01% 0.02%
B 7091 5000 322 322 4.54% 6.44%
C 7091 5000 885 885 12.48% 17.70%
D 7091 5000 770 770 10.86% 15.40%

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 0 254 124390 889.11 703 693 139.1
A 13 6 9626 64.21 703 693 139.1
A 13 254 8303 54.7 703 693 139.1
B 0 219 858290 6870.03 670 657 124.8
B 5 172 799581 6399.74 670 657 124.8
B 4 170 51461 406.96 670 657 124.8
C 1 23 2619938 18474.31 627 634 141.8
C 10 49 1153689 8132.66 627 634 141.8
C 15 214 226094 1590.2 627 634 141.8
D 8 195 2208700 13577.01 659 643 162.6
D 12 218 526102 3230.97 659 643 162.6
D 1 52 473868 2909.79 659 643 162.6

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