ASTROSAT CZTI

Data Quality Report

Orbit 36004

Creation date: 2022-08-09T17:51:33.607395
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/AS1T04_069T01_9000005158_36004cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36004cztM0_level2_quad_clean.evt
Size (bytes)406,604,16086,276,160
Size387.8 MB 82.3 MB
Events in quadrant A2,702,451567,224
Events in quadrant B3,005,121566,318
Events in quadrant C2,932,246558,051
Events in quadrant D3,298,769534,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114093
B0123082
C0120102
D0132672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552480.144823%
B5524791.430123%
C5524410.742216%
D5524921.665460%

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 7106 5525 0 0 0.00% 0.00%
B 7106 5525 46 46 0.65% 0.83%
C 7106 5525 30 30 0.42% 0.54%
D 7106 5525 73 73 1.03% 1.32%

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 176704 1346.27 647 633 130.8
A 13 6 10808 77.8 647 633 130.8
A 13 254 10381 74.53 647 633 130.8
B 5 172 237757 1920.06 636 617 123.5
B 4 171 89589 720.38 636 617 123.5
B 5 255 70050 562.18 636 617 123.5
C 15 214 234099 1606.99 621 625 145.3
C 9 187 109919 752.26 621 625 145.3
C 0 10 85264 582.57 621 625 145.3
D 12 235 215054 1423.45 622 606 150.7
D 10 118 155580 1028.68 622 606 150.7
D 13 249 153369 1014.0 622 606 150.7

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