ASTROSAT CZTI

Data Quality Report

Orbit 35740

Creation date: 2022-05-09T17:20:35.752332
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_029T06_9000005126_35740cztM0_level2.evt modeM0/AS1A09_029T06_9000005126_35740cztM0_level2_quad_clean.evt
Size (bytes)432,146,88071,205,120
Size412.1 MB 67.9 MB
Events in quadrant A2,541,708468,851
Events in quadrant B3,106,641470,550
Events in quadrant C2,690,968441,751
Events in quadrant D4,405,585420,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106442
B0123612
C0110052
D0164162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504590.178394%
B50451883.726462%
C5045741.466799%
D50452414.777007%

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 7168 5046 0 0 0.00% 0.00%
B 7168 5046 135 135 1.88% 2.68%
C 7168 5046 70 70 0.98% 1.39%
D 7168 5046 290 290 4.05% 5.75%

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 143427 1154.09 613 602 123.8
A 13 6 16072 125.0 613 602 123.8
A 7 48 7490 55.66 613 602 123.8
B 5 172 599745 5276.95 597 584 113.5
B 5 255 67797 591.96 597 584 113.5
B 0 189 62435 544.74 597 584 113.5
C 0 10 219066 1659.34 573 577 131.7
C 15 214 212588 1610.14 573 577 131.7
C 0 207 9305 66.29 573 577 131.7
D 1 52 1346733 9578.47 575 561 140.5
D 14 52 384095 2728.97 575 561 140.5
D 13 249 192808 1367.9 575 561 140.5

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