ASTROSAT CZTI

Data Quality Report

Orbit 36885

Creation date: 2024-06-27T21:32:48.924299
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_36885cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36885cztM0_level2_quad_clean.evt
Size (bytes)313,848,00065,030,400
Size299.3 MB 62.0 MB
Events in quadrant A2,383,365538,826
Events in quadrant B753,1157,964
Events in quadrant C2,746,918551,326
Events in quadrant D3,278,262521,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103793
B050272
C0112722
D0131022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496470.141015%
B49644964100.000000%
C49641122.256245%
D4964771.551168%

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 9210 4966 3 3 0.03% 0.06%
B 9209 4963 0 0 0.00% 0.00%
C 9210 4966 75 75 0.81% 1.51%
D 9210 4966 81 81 0.88% 1.63%

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 218254 1941.02 554 544 112.2
A 13 6 16368 141.08 554 544 112.2
A 13 254 7930 65.85 554 544 112.2
B 12 243 689688 187796.19 10 10 3.7
B 12 144 12244 3331.26 10 10 3.7
B 5 172 3522 956.3 10 10 3.7
C 0 10 293051 2322.96 545 552 125.9
C 15 214 209559 1659.89 545 552 125.9
C 15 159 82634 651.88 545 552 125.9
D 12 235 791346 6072.45 538 523 130.2
D 2 250 98331 751.03 538 523 130.2
D 13 249 97717 746.32 538 523 130.2

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