ASTROSAT CZTI

Data Quality Report

Orbit 32729

Creation date: 2024-06-27T20:41:19.145222
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/AS1A10_123T04_9000004726_32729cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32729cztM0_level2_quad_clean.evt
Size (bytes)473,860,80062,703,360
Size451.9 MB 59.8 MB
Events in quadrant A2,804,622405,308
Events in quadrant B2,751,573414,138
Events in quadrant C2,607,091398,789
Events in quadrant D5,864,427345,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111972
B0110911
C0107001
D0208111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4766310.650441%
B4766430.902224%
C4766841.762484%
D476681917.184222%

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 6889 4767 30 30 0.44% 0.63%
B 6889 4767 17 17 0.25% 0.36%
C 6889 4767 79 79 1.15% 1.66%
D 6889 4767 818 818 11.87% 17.16%

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 15 249 394366 3372.61 587 577 116.8
A 10 228 130088 1109.2 587 577 116.8
A 13 254 9350 75.14 587 577 116.8
B 5 200 99867 904.65 584 572 109.8
B 0 197 90061 815.31 584 572 109.8
B 0 219 72747 657.57 584 572 109.8
C 0 10 252418 1967.81 558 562 128.0
C 6 96 39558 304.68 558 562 128.0
C 0 207 38959 300.0 558 562 128.0
D 2 250 1879264 15001.7 528 518 125.2
D 7 80 606563 4839.24 528 518 125.2
D 8 195 330998 2638.87 528 518 125.2

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