ASTROSAT CZTI

Data Quality Report

Orbit 34700

Creation date: 2022-07-18T19:26:57.897749
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/AS1A07_138T08_9000004970_34700cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34700cztM0_level2_quad_clean.evt
Size (bytes)450,270,72061,983,360
Size429.4 MB 59.1 MB
Events in quadrant A2,454,812389,396
Events in quadrant B2,953,986391,372
Events in quadrant C2,627,176387,322
Events in quadrant D5,260,277356,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103913
B0118902
C0105482
D0191092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5018210.418493%
B50181012.012754%
C5018260.518135%
D50182474.922280%

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 6932 5019 9 9 0.13% 0.18%
B 6932 5019 67 67 0.97% 1.33%
C 6932 5019 18 18 0.26% 0.36%
D 6932 5019 181 181 2.61% 3.61%

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 9 143 59838 499.4 592 581 118.7
A 10 83 47197 392.87 592 581 118.7
A 7 48 22933 188.38 592 581 118.7
B 5 172 283414 2566.19 584 570 110.2
B 5 255 115439 1042.19 584 570 110.2
B 4 171 93619 844.22 584 570 110.2
C 15 214 219429 1659.21 571 574 131.9
C 0 10 116994 882.62 571 574 131.9
C 14 67 46860 350.91 571 574 131.9
D 8 195 2201102 15660.78 566 550 140.5
D 2 250 173611 1231.63 566 550 140.5
D 2 207 165273 1172.29 566 550 140.5

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