ASTROSAT CZTI

Data Quality Report

Orbit 36635

Creation date: 2024-06-27T21:29:30.057989
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_049T03_9000005228_36635cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36635cztM0_level2_quad_clean.evt
Size (bytes)503,686,08052,444,800
Size480.4 MB 50.0 MB
Events in quadrant A2,883,530308,934
Events in quadrant B3,667,572307,919
Events in quadrant C3,542,293303,462
Events in quadrant D4,788,148282,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117193
B0143682
C0137682
D0180152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5499120.218221%
B54991913.473359%
C54991272.309511%
D54992173.946172%

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 9087 5501 5 5 0.06% 0.09%
B 9087 5501 112 112 1.23% 2.04%
C 9087 5501 101 101 1.11% 1.84%
D 9087 5501 192 192 2.11% 3.49%

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 207465 1524.62 675 663 135.6
A 15 223 36130 261.48 675 663 135.6
A 13 6 25430 182.59 675 663 135.6
B 5 200 685437 5445.24 665 649 125.8
B 5 255 235279 1865.71 665 649 125.8
B 0 213 43948 344.3 665 649 125.8
C 14 254 347258 2322.09 647 654 149.3
C 0 10 334816 2238.73 647 654 149.3
C 15 214 233755 1561.67 647 654 149.3
D 12 235 1882509 11941.07 643 624 157.6
D 4 239 85406 537.96 643 624 157.6
D 13 171 75706 476.42 643 624 157.6

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