ASTROSAT CZTI

Data Quality Report

Orbit 00592

Creation date: 2024-06-27T14:00:16.659492
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/AS1P01_118T02_9000000082_00592cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00592cztM0_level2_quad_clean.evt
Size (bytes)858,651,84039,997,440
Size818.9 MB 38.1 MB
Events in quadrant A6,325,728212,697
Events in quadrant B6,483,043219,435
Events in quadrant C6,312,030207,908
Events in quadrant D6,536,637204,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224903
B0229712
C0224712
D0231512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5226210.401837%
B5226150.287026%
C5226971.856104%
D52261522.908534%

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 7351 5227 160 160 2.18% 3.06%
B 7351 5227 130 130 1.77% 2.49%
C 7351 5227 202 202 2.75% 3.86%
D 7351 5227 314 314 4.27% 6.01%

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 79 148889 427.08 1573 1562 345.0
A 0 149 50372 141.49 1573 1562 345.0
A 13 160 33369 92.2 1573 1562 345.0
B 7 221 172408 458.07 1595 1605 372.9
B 0 153 64540 168.78 1595 1605 372.9
B 5 249 38287 98.38 1595 1605 372.9
C 3 159 582987 1464.77 1427 1479 397.0
C 1 1 82420 203.88 1427 1479 397.0
C 9 83 23917 56.52 1427 1479 397.0
D 1 4 347627 810.85 1362 1414 427.0
D 13 37 231676 539.29 1362 1414 427.0
D 7 39 204647 475.98 1362 1414 427.0

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