ASTROSAT CZTI

Data Quality Report

Orbit 35715

Creation date: 2022-05-09T10:03:09.358226
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/AS1A09_142T05_9000005118_35715cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35715cztM0_level2_quad_clean.evt
Size (bytes)418,351,68073,137,600
Size399.0 MB 69.7 MB
Events in quadrant A2,774,613459,221
Events in quadrant B2,992,421462,387
Events in quadrant C3,685,203441,536
Events in quadrant D2,817,397440,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120603
B0127252
C0146502
D0125182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883120.203978%
B5883430.730920%
C58832103.569607%
D5883410.696923%

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 8988 5885 0 0 0.00% 0.00%
B 8988 5885 28 28 0.31% 0.48%
C 8988 5885 191 191 2.13% 3.25%
D 8988 5885 34 34 0.38% 0.58%

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 149116 1080.05 675 662 137.5
A 13 6 12274 84.48 675 662 137.5
A 3 137 7269 48.07 675 662 137.5
B 5 172 313714 2392.57 666 647 130.8
B 5 255 42442 319.41 666 647 130.8
B 12 111 16691 122.61 666 647 130.8
C 0 10 481450 3160.04 646 649 152.2
C 0 207 400558 2628.39 646 649 152.2
C 15 214 242093 1586.88 646 649 152.2
D 13 249 145266 903.05 654 636 160.2
D 2 250 40931 251.59 654 636 160.2
D 2 234 27919 170.35 654 636 160.2

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