ASTROSAT CZTI

Data Quality Report

Orbit 36307

Creation date: 2022-06-16T06:02:23.537637
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_089T02_9000005188_36307cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36307cztM0_level2_quad_clean.evt
Size (bytes)483,505,92057,352,320
Size461.1 MB 54.7 MB
Events in quadrant A2,511,333358,400
Events in quadrant B3,644,304349,962
Events in quadrant C2,698,465349,936
Events in quadrant D5,438,125315,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107903
B0142002
C0111792
D0197532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517390.173980%
B51733216.205297%
C5173400.773246%
D517351810.013532%

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 7116 5174 4 4 0.06% 0.08%
B 7116 5174 259 259 3.64% 5.01%
C 7116 5174 44 44 0.62% 0.85%
D 7116 5174 622 622 8.74% 12.02%

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 176471 1491.09 589 578 118.0
A 15 223 37486 312.88 589 578 118.0
A 13 254 7796 61.19 589 578 118.0
B 5 172 766704 6960.7 573 558 110.1
B 5 236 369769 3354.41 573 558 110.1
B 4 171 79808 720.01 573 558 110.1
C 15 214 219225 1649.3 568 574 132.6
C 0 10 215529 1621.42 568 574 132.6
C 0 207 29579 218.79 568 574 132.6
D 7 223 1685391 12533.3 545 532 134.4
D 12 6 871058 6475.66 545 532 134.4
D 12 235 239659 1778.81 545 532 134.4

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