ASTROSAT CZTI

Data Quality Report

Orbit 38937

Creation date: 2024-06-27T21:58:22.528355
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/AS1T05_064T01_9000005416_38937cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38937cztM0_level2_quad_clean.evt
Size (bytes)424,408,32094,118,400
Size404.7 MB 89.8 MB
Events in quadrant A3,011,962657,470
Events in quadrant B2,662,921663,963
Events in quadrant C2,614,107634,579
Events in quadrant D6,993,175508,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124392
B0116501
C0111401
D0246401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5506340.617508%
B5506300.544860%
C550670.127134%
D550697617.726117%

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 7329 5507 18 18 0.25% 0.33%
B 7329 5507 20 20 0.27% 0.36%
C 7329 5507 0 0 0.00% 0.00%
D 7329 5507 1060 1060 14.46% 19.25%

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 451405 3589.4 622 610 125.6
A 13 248 110821 877.54 622 610 125.6
A 12 16 27756 216.15 622 610 125.6
B 5 172 178809 1530.31 615 599 116.5
B 15 85 17048 141.25 615 599 116.5
B 0 230 15454 127.56 615 599 116.5
C 15 214 226452 1607.02 608 613 140.5
C 13 61 4165 25.28 608 613 140.5
C 4 254 3683 21.85 608 613 140.5
D 12 227 1262602 9204.34 563 548 137.1
D 9 49 1252038 9127.29 563 548 137.1
D 14 52 631571 4602.14 563 548 137.1

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