ASTROSAT CZTI

Data Quality Report

Orbit 37652

Creation date: 2024-06-27T21:42:40.150426
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_37652cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37652cztM0_level2_quad_clean.evt
Size (bytes)405,504,00092,361,600
Size386.7 MB 88.1 MB
Events in quadrant A3,179,995607,890
Events in quadrant B2,739,166632,419
Events in quadrant C2,779,724638,276
Events in quadrant D3,251,380577,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126393
B0111562
C0111142
D0129462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4867711.458804%
B4867761.561537%
C4867751.540990%
D48672996.143415%

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 6990 4868 52 52 0.74% 1.07%
B 6989 4866 39 39 0.56% 0.80%
C 6989 4866 60 60 0.86% 1.23%
D 6989 4866 290 290 4.15% 5.96%

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 447364 3851.29 577 567 116.0
A 10 83 295777 2544.65 577 567 116.0
A 9 143 191577 1646.46 577 567 116.0
B 5 172 104409 949.36 583 569 109.4
B 4 232 53950 488.04 583 569 109.4
B 0 230 52667 476.31 583 569 109.4
C 15 214 223746 1677.51 583 588 133.0
C 0 10 141762 1061.23 583 588 133.0
C 14 254 131311 982.66 583 588 133.0
D 12 227 482564 3572.54 559 546 134.9
D 2 249 280720 2076.54 559 546 134.9
D 2 250 100956 744.2 559 546 134.9

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