ASTROSAT CZTI

Data Quality Report

Orbit 36380

Creation date: 2022-06-23T13:14:30.160222
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_097T24_9000005196_36380cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36380cztM0_level2_quad_clean.evt
Size (bytes)567,339,84076,092,480
Size541.1 MB 72.6 MB
Events in quadrant A5,332,454436,294
Events in quadrant B4,481,975497,632
Events in quadrant C2,831,408518,265
Events in quadrant D4,181,455484,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191423
B0167922
C0115302
D0160402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231120923.112216%
B523159411.355381%
C5231741.414643%
D52313606.882049%

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 6993 5232 1046 1046 14.96% 19.99%
B 6993 5232 500 500 7.15% 9.56%
C 6993 5232 48 48 0.69% 0.92%
D 6993 5232 342 342 4.89% 6.54%

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 15 223 3075967 28991.26 530 521 106.1
A 10 83 169083 1588.98 530 521 106.1
A 12 189 16002 145.93 530 521 106.1
B 5 172 1513464 13517.1 573 559 111.9
B 4 171 350736 3128.67 573 559 111.9
B 5 255 259711 2315.4 573 559 111.9
C 15 214 223529 1629.48 586 592 136.8
C 0 10 221886 1617.47 586 592 136.8
C 4 254 60995 441.49 586 592 136.8
D 12 6 709226 5078.57 571 558 139.5
D 12 16 628300 4498.62 571 558 139.5
D 13 249 212899 1521.71 571 558 139.5

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