ASTROSAT CZTI

Data Quality Report

Orbit 37631

Creation date: 2024-06-27T21:42:26.142779
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_075T01_9000005342_37631cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37631cztM0_level2_quad_clean.evt
Size (bytes)622,612,80055,365,120
Size593.8 MB 52.8 MB
Events in quadrant A7,134,754299,725
Events in quadrant B3,332,399339,747
Events in quadrant C2,855,258338,195
Events in quadrant D5,153,512305,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249083
B0133592
C0116872
D0190462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5613175231.213255%
B56131482.636736%
C5613290.516658%
D561370412.542312%

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 7196 5614 1609 1609 22.36% 28.66%
B 7195 5612 102 102 1.42% 1.82%
C 7195 5612 22 22 0.31% 0.39%
D 7195 5612 729 729 10.13% 12.99%

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 15 222 4531630 39716.92 558 547 114.1
A 10 83 294878 2579.94 558 547 114.1
A 7 16 41833 361.89 558 547 114.1
B 5 172 364837 2926.15 644 627 124.5
B 15 85 119075 951.64 644 627 124.5
B 5 255 98035 782.6 644 627 124.5
C 15 214 259947 1754.09 634 638 147.8
C 0 10 103467 695.58 634 638 147.8
C 14 254 12249 78.54 634 638 147.8
D 2 249 1662875 11145.87 607 591 149.1
D 10 199 298109 1994.9 607 591 149.1
D 13 249 284826 1905.84 607 591 149.1

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