ASTROSAT CZTI

Data Quality Report

Orbit 40778

Creation date: 2024-06-27T22:20:21.964752
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/AS1A12_095T02_9000005568_40778cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40778cztM0_level2_quad_clean.evt
Size (bytes)311,872,32085,464,000
Size297.4 MB 81.5 MB
Events in quadrant A2,729,158597,931
Events in quadrant B2,784,485619,858
Events in quadrant C2,704,217584,544
Events in quadrant D2,934,940434,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110973
B0113732
C0109902
D0122032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5010140.279441%
B50101001.996008%
C50101032.055888%
D5010114422.834331%

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 7013 5011 6 6 0.09% 0.12%
B 7013 5011 70 70 1.00% 1.40%
C 7013 5011 96 96 1.37% 1.92%
D 7013 5011 54 54 0.77% 1.08%

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 470531 4057.52 569 558 115.8
A 12 189 28038 237.25 569 558 115.8
A 2 79 23345 196.73 569 558 115.8
B 5 255 235465 2152.64 572 557 109.1
B 0 229 151094 1379.48 572 557 109.1
B 7 202 72632 660.48 572 557 109.1
C 0 10 279352 2131.65 559 563 130.8
C 15 214 215157 1640.81 559 563 130.8
C 9 187 15885 117.15 559 563 130.8
D 12 191 252706 2055.56 496 483 122.7
D 1 47 223275 1815.71 496 483 122.7
D 12 227 141170 1146.57 496 483 122.7

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