ASTROSAT CZTI

Data Quality Report

Orbit 36863

Creation date: 2024-06-27T21:32:30.445559
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_9000005244_36863cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36863cztM0_level2_quad_clean.evt
Size (bytes)1,066,717,440137,361,600
Size1017.3 MB 131.0 MB
Events in quadrant A7,631,6931,078,366
Events in quadrant B2,377,66318,366
Events in quadrant C8,057,7741,069,130
Events in quadrant D13,170,581915,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326275
B0158164
C0333364
D0495884

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15566490.314789%
B1556615566100.000000%
C15566660.424001%
D15566182111.698574%

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 19806 15569 24 24 0.12% 0.15%
B 19805 15565 1 1 0.01% 0.01%
C 19806 15569 56 56 0.28% 0.36%
D 19806 15568 1730 1730 8.73% 11.11%

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 594242 1684.17 1739 1705 351.8
A 9 143 146172 410.62 1739 1705 351.8
A 7 16 106506 297.88 1739 1705 351.8
B 12 243 2157126 231821.41 37 36 9.3
B 12 144 40918 4393.57 37 36 9.3
B 0 213 5748 613.87 37 36 9.3
C 15 214 667592 1702.81 1690 1707 391.1
C 0 239 405077 1031.5 1690 1707 391.1
C 0 10 247072 627.45 1690 1707 391.1
D 12 17 3164249 8053.0 1594 1552 392.7
D 13 249 1426385 3627.97 1594 1552 392.7
D 2 249 818991 2081.4 1594 1552 392.7

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