ASTROSAT CZTI

Data Quality Report

Orbit 36580

Creation date: 2024-06-27T21:28:42.469273
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_097T17_9000005222_36580cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36580cztM0_level2_quad_clean.evt
Size (bytes)451,293,12089,737,920
Size430.4 MB 85.6 MB
Events in quadrant A2,955,937613,196
Events in quadrant B2,774,527614,625
Events in quadrant C3,370,017591,796
Events in quadrant D4,230,864550,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117273
B0110472
C0129362
D0159782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959671.351079%
B4959511.028433%
C49592194.416213%
D49592474.980843%

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 7082 4960 44 44 0.62% 0.89%
B 7082 4960 36 36 0.51% 0.73%
C 7082 4960 174 174 2.46% 3.51%
D 7082 4960 199 199 2.81% 4.01%

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 15 223 232312 1795.91 647 635 129.0
A 10 83 191731 1481.34 647 635 129.0
A 9 143 29909 226.93 647 635 129.0
B 5 172 111571 928.48 635 621 119.5
B 0 189 82824 687.91 635 621 119.5
B 0 213 21751 176.83 635 621 119.5
C 0 10 661517 4800.56 600 606 137.7
C 15 214 209822 1519.65 600 606 137.7
C 14 254 68693 494.55 600 606 137.7
D 12 235 732785 5045.66 613 597 145.1
D 13 249 329821 2268.75 613 597 145.1
D 1 20 194363 1335.28 613 597 145.1

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