ASTROSAT CZTI

Data Quality Report

Orbit 20008

Creation date: 2024-06-27T18:10:01.515227
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/AS1A06_002T02_9000002982_20008cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20008cztM0_level2_quad_clean.evt
Size (bytes)569,839,680106,459,200
Size543.4 MB 101.5 MB
Events in quadrant A4,569,380680,438
Events in quadrant B4,048,687690,311
Events in quadrant C4,037,112659,318
Events in quadrant D4,079,089657,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186572
B0172312
C0169912
D0175702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77082403.113648%
B77082052.659574%
C77082743.554748%
D77091051.362044%

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 8453 7710 148 148 1.75% 1.92%
B 8453 7710 11 11 0.13% 0.14%
C 8453 7710 46 46 0.54% 0.60%
D 8454 7711 24 24 0.28% 0.31%

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 14 238 755598 3920.32 949 929 192.5
A 14 254 120028 618.69 949 929 192.5
A 5 16 39235 198.99 949 929 192.5
B 7 220 181044 989.73 951 925 182.0
B 0 197 50554 272.7 951 925 182.0
B 0 190 29382 156.37 951 925 182.0
C 9 221 212439 984.63 912 916 214.8
C 14 238 140764 650.99 912 916 214.8
C 0 207 85122 391.98 912 916 214.8
D 1 52 335827 1470.19 933 904 227.8
D 12 227 58915 254.65 933 904 227.8
D 12 218 50921 219.56 933 904 227.8

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