ASTROSAT CZTI

Data Quality Report

Orbit 37693

Creation date: 2024-06-27T21:43:11.192623
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/AS1A11_075T01_9000005342_37693cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37693cztM0_level2_quad_clean.evt
Size (bytes)579,000,96072,720,000
Size552.2 MB 69.4 MB
Events in quadrant A6,220,059451,359
Events in quadrant B2,937,828478,155
Events in quadrant C2,915,195472,638
Events in quadrant D5,108,086432,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220043
B0120332
C0117072
D0190402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5240119222.748092%
B5240691.316794%
C5240290.553435%
D52401743.320611%

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 7213 5241 982 982 13.61% 18.74%
B 7212 5239 45 45 0.62% 0.86%
C 7212 5239 19 19 0.26% 0.36%
D 7212 5239 190 190 2.63% 3.63%

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 15 222 3519779 28601.94 615 604 123.0
A 10 83 289133 2345.01 615 604 123.0
A 9 143 16292 127.5 615 604 123.0
B 5 172 182501 1461.95 662 646 124.4
B 15 85 53167 422.22 662 646 124.4
B 0 230 40696 321.97 662 646 124.4
C 15 214 223020 1492.02 654 662 149.0
C 0 10 97245 648.07 654 662 149.0
C 14 254 25729 168.2 654 662 149.0
D 12 227 1948784 12400.39 650 636 157.1
D 5 222 316591 2011.12 650 636 157.1
D 13 249 175018 1109.98 650 636 157.1

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