ASTROSAT CZTI

Data Quality Report

Orbit 26674

Creation date: 2024-06-27T19:31:38.038536
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/AS1A09_145T01_9000003848_26674cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26674cztM0_level2_quad_clean.evt
Size (bytes)2,378,969,280395,458,560
Size2.2 GB 377.1 MB
Events in quadrant A15,236,3592,654,195
Events in quadrant B13,467,0482,704,034
Events in quadrant C13,896,7822,585,983
Events in quadrant D27,623,5642,172,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0626200
B0571030
C0581050
D01003010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270572811.038548%
B270582040.753936%
C270584071.504176%
D27059547620.237259%

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 32506 27062 107 107 0.33% 0.40%
B 32507 27063 27 27 0.08% 0.10%
C 32507 27063 78 78 0.24% 0.29%
D 32507 27063 3899 3899 11.99% 14.41%

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 0 13 1795861 2691.02 3338 3284 666.1
A 13 170 563574 841.11 3338 3284 666.1
A 13 254 44311 61.59 3338 3284 666.1
B 10 251 107948 167.37 3325 3257 625.5
B 15 33 83895 128.92 3325 3257 625.5
B 12 111 74721 114.25 3325 3257 625.5
C 3 233 650313 862.65 3192 3225 750.1
C 14 238 515099 682.39 3192 3225 750.1
C 2 16 169755 222.01 3192 3225 750.1
D 7 80 12158616 17681.23 2825 2751 687.5
D 1 52 3113267 4524.38 2825 2751 687.5
D 2 250 1106891 1606.02 2825 2751 687.5

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