ASTROSAT CZTI

Data Quality Report

Orbit 37896

Creation date: 2024-06-27T21:45:50.218167
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/AS1T05_059T01_9000005354_37896cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37896cztM0_level2_quad_clean.evt
Size (bytes)419,330,88057,332,160
Size399.9 MB 54.7 MB
Events in quadrant A2,948,881355,140
Events in quadrant B3,050,563353,351
Events in quadrant C2,916,284351,611
Events in quadrant D3,439,898320,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117553
B0120562
C0117242
D0134232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5063200.395023%
B5063921.817104%
C5063571.125815%
D50631282.528145%

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 7065 5064 7 7 0.10% 0.14%
B 7065 5064 72 72 1.02% 1.42%
C 7065 5064 31 31 0.44% 0.61%
D 7065 5064 105 105 1.49% 2.07%

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 341559 2674.28 639 629 127.5
A 15 222 66307 515.18 639 629 127.5
A 7 3 26130 200.03 639 629 127.5
B 5 172 436144 3678.1 628 612 118.4
B 0 213 34029 282.21 628 612 118.4
B 0 229 22769 187.12 628 612 118.4
C 15 214 217926 1533.01 619 626 141.7
C 0 10 177312 1246.49 619 626 141.7
C 14 254 92485 648.05 619 626 141.7
D 2 249 240843 1601.68 619 605 150.0
D 1 52 191629 1273.57 619 605 150.0
D 7 223 148866 988.46 619 605 150.0

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