ASTROSAT CZTI

Data Quality Report

Orbit 37710

Creation date: 2024-06-27T21:43:26.510957
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_37710cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37710cztM0_level2_quad_clean.evt
Size (bytes)488,445,12096,266,880
Size465.8 MB 91.8 MB
Events in quadrant A6,192,757612,568
Events in quadrant B2,755,068664,573
Events in quadrant C2,685,738669,487
Events in quadrant D2,831,101628,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216843
B0111842
C0107522
D0116272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A484481516.824938%
B4844921.899257%
C4844701.445087%
D4844631.300578%

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 6965 4844 725 725 10.41% 14.97%
B 6964 4843 84 84 1.21% 1.73%
C 6964 4843 58 58 0.83% 1.20%
D 6964 4843 40 40 0.57% 0.83%

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 3441619 30465.9 564 554 112.9
A 10 83 294875 2605.81 564 554 112.9
A 9 143 226267 1998.38 564 554 112.9
B 5 200 188003 1711.93 582 568 109.5
B 5 172 155894 1418.66 582 568 109.5
B 5 255 39915 359.37 582 568 109.5
C 15 214 219401 1630.34 582 588 134.2
C 0 10 183459 1362.54 582 588 134.2
C 3 233 8327 57.66 582 588 134.2
D 12 227 182599 1309.03 577 562 139.1
D 13 249 140280 1004.71 577 562 139.1
D 2 153 104875 750.12 577 562 139.1

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