ASTROSAT CZTI

Data Quality Report

Orbit 43627

Creation date: 2024-06-27T22:53:48.996667
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/AS1A12_095T02_9000005892_43627cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43627cztM0_level2_quad_clean.evt
Size (bytes)2,458,342,080216,938,880
Size2.3 GB 206.9 MB
Events in quadrant A13,504,3741,727,871
Events in quadrant B9,820,9481,767,187
Events in quadrant C38,696,710747,325
Events in quadrant D27,731,0021,196,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513722
B0405872
C01258842
D0935882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162118735.385232%
B162107254.472548%
C162101362684.059223%
D16210772547.655768%

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 16696 16213 772 772 4.62% 4.76%
B 16695 16211 221 221 1.32% 1.36%
C 16694 16209 13325 13325 79.82% 82.21%
D 16694 16211 6523 6523 39.07% 40.24%

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 63 3163621 8320.04 1840 1804 380.0
A 10 83 1727909 4542.09 1840 1804 380.0
A 15 223 1108600 2912.43 1840 1804 380.0
B 5 235 1253583 3437.8 1840 1784 364.1
B 0 219 272686 743.97 1840 1784 364.1
B 0 199 166964 453.63 1840 1784 364.1
C 15 142 22918358 112233.04 867 872 204.2
C 15 174 8731896 42758.15 867 872 204.2
C 15 126 1007824 4931.31 867 872 204.2
D 4 216 7390336 18307.99 1476 1424 403.6
D 4 221 2979641 7379.32 1476 1424 403.6
D 14 210 1756606 4348.93 1476 1424 403.6

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