ASTROSAT CZTI

Data Quality Report

Orbit 37518

Creation date: 2024-06-27T21:40:59.744523
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_061T01_9000005330_37518cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37518cztM0_level2_quad_clean.evt
Size (bytes)451,958,40061,894,080
Size431.0 MB 59.0 MB
Events in quadrant A3,044,605379,759
Events in quadrant B3,257,318383,960
Events in quadrant C2,943,148380,149
Events in quadrant D4,081,852358,068

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124599
B0132339
C0119655
D01578716

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5315320.602070%
B53141011.900640%
C5317581.090841%
D53133666.888763%

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 7141 5318 9 9 0.13% 0.17%
B 7141 5318 60 60 0.84% 1.13%
C 7141 5319 46 46 0.64% 0.86%
D 7141 5318 365 365 5.11% 6.86%

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 330219 2546.75 637 626 129.4
A 9 143 89642 687.82 637 626 129.4
A 12 189 61480 470.22 637 626 129.4
B 0 190 139020 1139.92 632 617 121.4
B 0 197 129679 1062.98 632 617 121.4
B 5 172 117619 963.65 632 617 121.4
C 15 214 229743 1572.82 624 629 145.7
C 14 254 133073 909.2 624 629 145.7
C 0 10 119043 812.89 624 629 145.7
D 13 249 588806 3973.64 601 584 148.0
D 2 249 512546 3458.48 601 584 148.0
D 2 153 215865 1454.3 601 584 148.0

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