ASTROSAT CZTI

Data Quality Report

Orbit 39900

Creation date: 2024-06-27T22:10:07.543143
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/AS1A12_044T09_9000005506_39900cztM0_level2.fits modeM0/AS1A12_044T09_9000005506_39900cztM0_level2_quad_clean.evt
Size (bytes)369,495,36095,250,240
Size352.4 MB 90.8 MB
Events in quadrant A3,160,229644,961
Events in quadrant B3,219,094644,763
Events in quadrant C2,865,803622,698
Events in quadrant D3,980,625565,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129952
B0134031
C0120391
D0159011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5804260.447967%
B58041192.050310%
C5804170.292901%
D58042474.255686%

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 7207 5805 12 12 0.17% 0.21%
B 7207 5805 77 77 1.07% 1.33%
C 7207 5805 8 8 0.11% 0.14%
D 7207 5805 247 247 3.43% 4.25%

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 521998 3928.8 648 636 132.7
A 7 3 47828 355.62 648 636 132.7
A 13 248 37686 279.2 648 636 132.7
B 5 255 331392 2641.45 639 623 125.2
B 0 230 148821 1183.48 639 623 125.2
B 15 85 40904 321.68 639 623 125.2
C 15 214 242175 1628.48 629 633 148.3
C 1 23 76979 514.72 629 633 148.3
C 3 233 39823 264.22 629 633 148.3
D 12 227 592428 3838.8 622 604 154.2
D 1 47 513586 3327.4 622 604 154.2
D 13 249 218834 1415.52 622 604 154.2

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