ASTROSAT CZTI

Data Quality Report

Orbit 35064

Creation date: 2022-03-24T08:07:40.262990
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_046T08_9000005024_35064cztM0_level2.evt modeM0/AS1A11_046T08_9000005024_35064cztM0_level2_quad_clean.evt
Size (bytes)504,918,720107,055,360
Size481.5 MB 102.1 MB
Events in quadrant A3,244,383698,441
Events in quadrant B3,182,962723,883
Events in quadrant C2,890,603741,985
Events in quadrant D5,578,236670,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138293
B0135482
C0122682
D0206612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58302774.751286%
B58301322.264151%
C5830270.463122%
D58303846.586621%

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 7172 5831 186 186 2.59% 3.19%
B 7172 5831 72 72 1.00% 1.23%
C 7172 5831 18 18 0.25% 0.31%
D 7172 5831 331 331 4.62% 5.68%

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 15 237 673630 5280.76 635 622 127.4
A 10 83 80223 624.59 635 622 127.4
A 9 143 18289 138.62 635 622 127.4
B 5 172 407401 3288.65 646 630 123.7
B 4 232 61306 490.55 646 630 123.7
B 5 200 58762 469.98 646 630 123.7
C 15 214 246159 1636.23 642 647 150.0
C 0 10 116137 769.69 642 647 150.0
C 14 67 9371 58.14 642 647 150.0
D 8 195 1907066 12760.68 620 604 149.4
D 2 250 488542 3265.96 620 604 149.4
D 1 47 209580 1398.76 620 604 149.4

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