ASTROSAT CZTI

Data Quality Report

Orbit 34307

Creation date: 2022-02-01T03:51:53.010591
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_047T07_9000004892_34307cztM0_level2.evt modeM0/AS1A11_047T07_9000004892_34307cztM0_level2_quad_clean.evt
Size (bytes)455,699,52082,722,240
Size434.6 MB 78.9 MB
Events in quadrant A2,445,511543,760
Events in quadrant B3,664,859541,505
Events in quadrant C2,744,589562,033
Events in quadrant D4,620,801521,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101413
B0141622
C0110192
D0170522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A478790.188009%
B47872274.742010%
C4787450.940046%
D47873858.042615%

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 6939 4788 2 2 0.03% 0.04%
B 6939 4788 148 148 2.13% 3.09%
C 6939 4788 28 28 0.40% 0.58%
D 6939 4788 296 296 4.27% 6.18%

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 29131 237.28 609 601 120.2
A 9 143 21283 172.01 609 601 120.2
A 0 127 15770 126.16 609 601 120.2
B 5 172 447094 3933.68 603 590 113.5
B 5 31 432878 3808.44 603 590 113.5
B 15 222 111945 981.03 603 590 113.5
C 15 214 204372 1467.59 606 615 138.8
C 0 10 117779 843.89 606 615 138.8
C 3 233 27546 193.97 606 615 138.8
D 12 235 876042 5894.12 582 570 148.5
D 8 195 599320 4031.09 582 570 148.5
D 10 118 436300 2933.56 582 570 148.5

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