ASTROSAT CZTI

Data Quality Report

Orbit 42620

Creation date: 2024-06-27T22:42:18.510545
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/AS1A05_174T01_9000005820_42620cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42620cztM0_level2_quad_clean.evt
Size (bytes)295,404,48087,998,400
Size281.7 MB 83.9 MB
Events in quadrant A2,904,998589,827
Events in quadrant B2,320,571607,055
Events in quadrant C2,484,533588,896
Events in quadrant D2,841,867534,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114982
B099562
C0100932
D0116352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4912140.285016%
B4912130.264658%
C491290.183225%
D4912921.872964%

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 7035 4913 6 6 0.09% 0.12%
B 7035 4913 4 4 0.06% 0.08%
C 7035 4913 5 5 0.07% 0.10%
D 7035 4913 81 81 1.15% 1.65%

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 528589 4448.88 578 567 118.7
A 2 79 62487 521.71 578 567 118.7
A 7 3 54059 450.7 578 567 118.7
B 0 168 25035 222.15 569 554 110.2
B 0 189 18813 165.69 569 554 110.2
B 0 246 16500 144.7 569 554 110.2
C 15 214 206356 1553.16 568 572 132.5
C 14 254 47196 351.9 568 572 132.5
C 4 254 8279 58.17 568 572 132.5
D 1 52 289186 2114.55 566 551 136.5
D 13 249 103743 755.99 566 551 136.5
D 12 6 83364 606.69 566 551 136.5

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