ASTROSAT CZTI

Data Quality Report

Orbit 09174

Creation date: 2024-06-27T15:42:17.469267
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/AS1C02_041T02_9000001282_09174cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09174cztM0_level2_quad_clean.evt
Size (bytes)474,050,88088,974,720
Size452.1 MB 84.9 MB
Events in quadrant A3,599,002573,088
Events in quadrant B3,263,742584,612
Events in quadrant C2,909,918565,793
Events in quadrant D4,151,992526,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149623
B0139086
C0129992
D0167022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360741.163522%
B6358490.770683%
C6360210.330189%
D63602754.323899%

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 8680 6362 27 27 0.31% 0.42%
B 8680 6362 0 0 0.00% 0.00%
C 8680 6362 0 0 0.00% 0.00%
D 8680 6362 251 251 2.89% 3.95%

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 8 5 512462 3260.07 771 755 157.0
A 5 16 48007 301.04 771 755 157.0
A 1 162 32903 204.81 771 755 157.0
B 0 230 59375 394.31 780 761 148.6
B 8 234 42208 278.83 780 761 148.6
B 0 229 28004 183.27 780 761 148.6
C 1 3 5957 30.18 743 748 172.6
C 13 61 5856 29.6 743 748 172.6
C 8 222 2861 12.24 743 748 172.6
D 1 52 497832 2651.54 721 704 187.5
D 13 104 439051 2338.02 721 704 187.5
D 12 233 280194 1490.72 721 704 187.5

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