ASTROSAT CZTI

Data Quality Report

Orbit 36071

Creation date: 2022-08-10T04:56:07.908226
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_36071cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36071cztM0_level2_quad_clean.evt
Size (bytes)397,480,32061,758,720
Size379.1 MB 58.9 MB
Events in quadrant A2,502,470389,279
Events in quadrant B2,721,507396,395
Events in quadrant C2,710,803380,077
Events in quadrant D3,759,346349,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105393
B0112042
C0109122
D0145772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5056110.217563%
B5056170.336234%
C5056450.890032%
D50563356.625791%

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 6999 5057 0 0 0.00% 0.00%
B 6999 5057 9 9 0.13% 0.18%
C 6999 5057 32 32 0.46% 0.63%
D 6999 5057 304 304 4.34% 6.01%

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 164320 1344.24 601 589 121.8
A 13 254 8112 61.76 601 589 121.8
A 13 6 6643 49.7 601 589 121.8
B 0 213 120338 1050.35 602 588 114.0
B 5 172 107778 940.18 602 588 114.0
B 5 255 24646 211.02 602 588 114.0
C 15 214 210789 1539.51 584 588 136.5
C 0 10 121915 888.6 584 588 136.5
C 0 207 99509 724.49 584 588 136.5
D 12 17 743960 5388.69 562 547 138.0
D 12 6 310409 2246.06 562 547 138.0
D 12 227 143463 1035.94 562 547 138.0

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