ASTROSAT CZTI

Data Quality Report

Orbit 32364

Creation date: 2024-06-27T20:39:22.207833
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/AS1A09_131T01_9000004702_32364cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32364cztM0_level2_quad_clean.evt
Size (bytes)740,180,160116,205,120
Size705.9 MB 110.8 MB
Events in quadrant A3,011,975852,058
Events in quadrant B7,264,975766,185
Events in quadrant C4,968,464716,628
Events in quadrant D6,774,604772,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128352
B0258941
C0187161
D0243781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876891.514636%
B5876125421.341048%
C5876124021.102791%
D58765349.087815%

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 7041 5877 19 19 0.27% 0.32%
B 7041 5877 837 837 11.89% 14.24%
C 7041 5877 517 517 7.34% 8.80%
D 7041 5877 397 397 5.64% 6.76%

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 14 239 93666 622.64 750 735 149.3
A 13 6 23373 151.68 750 735 149.3
A 13 254 11419 71.58 750 735 149.3
B 10 245 1818095 14297.28 684 667 127.1
B 6 159 1651189 12984.27 684 667 127.1
B 5 172 644670 5066.22 684 667 127.1
C 0 10 1586426 10866.58 635 640 145.9
C 3 233 313964 2147.05 635 640 145.9
C 14 238 218563 1493.31 635 640 145.9
D 8 195 2117396 12522.8 716 697 169.0
D 12 6 906898 5361.26 716 697 169.0
D 12 3 269065 1587.72 716 697 169.0

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