ASTROSAT CZTI

Data Quality Report

Orbit 08745

Creation date: 2024-06-27T15:36:38.878766
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/AS1G07_013T02_9000001216_08745cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08745cztM0_level2_quad_clean.evt
Size (bytes)459,691,200104,728,320
Size438.4 MB 99.9 MB
Events in quadrant A3,486,023673,946
Events in quadrant B3,574,368682,527
Events in quadrant C3,152,876682,625
Events in quadrant D3,242,927655,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149963
B0154232
C0143012
D0147772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6852390.569177%
B68521361.984822%
C6852360.525394%
D6852370.539988%

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 8632 6853 3 3 0.03% 0.04%
B 8632 6853 51 51 0.59% 0.74%
C 8632 6854 14 14 0.16% 0.20%
D 8632 6854 25 25 0.29% 0.36%

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 13 251 492117 3141.39 773 757 156.4
A 15 174 14742 89.41 773 757 156.4
A 0 226 7376 42.32 773 757 156.4
B 10 16 324071 2180.76 783 763 148.3
B 4 48 56648 376.95 783 763 148.3
B 0 214 38293 253.15 783 763 148.3
C 1 16 149500 838.87 766 769 177.3
C 13 61 5915 29.02 766 769 177.3
C 8 128 4092 18.74 766 769 177.3
D 2 152 106041 569.49 760 737 184.9
D 7 71 97178 521.56 760 737 184.9
D 1 52 56077 299.28 760 737 184.9

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