ASTROSAT CZTI

Data Quality Report

Orbit 47538

Creation date: 2024-07-13T12:37:58.095838
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/AS1C09_002T01_9000006334_47538cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47538cztM0_level2_quad_clean.evt
Size (bytes)600,001,920138,614,400
Size572.2 MB 132.2 MB
Events in quadrant A8,354,984922,320
Events in quadrant B4,394,069942,153
Events in quadrant C3,738,383908,943
Events in quadrant D5,054,908824,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303870
B0192290
C0175380
D0211880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86192252.610512%
B8620790.916473%
C8620100.116009%
D86201671.937355%

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 8619 8619 10 10 0.12% 0.12%
B 8620 8620 17 17 0.20% 0.20%
C 8620 8620 3 3 0.03% 0.03%
D 8620 8620 108 108 1.25% 1.25%

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 4412893 22354.21 949 928 197.4
A 9 191 254652 1285.55 949 928 197.4
A 14 235 13478 63.58 949 928 197.4
B 0 200 249416 1334.28 954 924 186.2
B 0 198 168347 898.98 954 924 186.2
B 5 172 86939 461.86 954 924 186.2
C 14 254 44211 195.94 939 941 220.8
C 12 250 26269 114.69 939 941 220.8
C 1 3 6653 25.87 939 941 220.8
D 7 55 455308 1921.15 931 896 236.5
D 2 165 307218 1295.06 931 896 236.5
D 4 222 297540 1254.14 931 896 236.5

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