ASTROSAT CZTI

Data Quality Report

Orbit 45276

Creation date: 2024-06-27T23:11:50.977037
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/AS1A13_024T03_9000006064_45276cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45276cztM0_level2_quad_clean.evt
Size (bytes)529,686,720118,926,720
Size505.1 MB 113.4 MB
Events in quadrant A6,000,632791,489
Events in quadrant B3,679,185824,121
Events in quadrant C3,541,111778,433
Events in quadrant D5,808,212687,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230390
B0160420
C0160210
D0223823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7459781.045717%
B7460430.576408%
C7460380.509383%
D74593194.276713%

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 7459 7459 48 48 0.64% 0.64%
B 7460 7460 31 31 0.42% 0.42%
C 7460 7460 20 20 0.27% 0.27%
D 7459 7459 326 326 4.37% 4.37%

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 10 83 2584510 15007.99 821 804 172.2
A 13 248 224627 1300.12 821 804 172.2
A 7 3 11199 60.38 821 804 172.2
B 4 171 268241 1620.61 823 797 165.0
B 0 186 27141 159.63 823 797 165.0
B 12 3 24935 146.26 823 797 165.0
C 12 2 229531 1207.95 801 806 189.3
C 14 254 140918 739.97 801 806 189.3
C 3 233 28012 143.68 801 806 189.3
D 13 249 690998 3462.39 788 765 199.4
D 12 33 499290 2500.73 788 765 199.4
D 11 241 317557 1589.11 788 765 199.4

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