ASTROSAT CZTI

Data Quality Report

Orbit 38731

Creation date: 2024-06-27T21:55:42.406491
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_054T01_9000005392_38731cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38731cztM0_level2_quad_clean.evt
Size (bytes)1,565,668,800219,574,080
Size1.5 GB 209.4 MB
Events in quadrant A8,924,5531,694,531
Events in quadrant B7,821,1351,708,477
Events in quadrant C7,508,0771,647,331
Events in quadrant D32,505,103530,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362285
B0336634
C0318814
D01071374

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154561911.235766%
B154561971.274586%
C15456240.155280%
D154561121772.573758%

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 19724 15459 111 111 0.56% 0.72%
B 19724 15459 132 132 0.67% 0.85%
C 19724 15459 7 7 0.04% 0.05%
D 19724 15458 9016 9016 45.71% 58.33%

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 1005094 2849.8 1735 1698 352.1
A 0 8 684077 1938.06 1735 1698 352.1
A 13 248 327666 925.8 1735 1698 352.1
B 5 184 784178 2361.1 1723 1676 331.4
B 4 171 137556 410.0 1723 1676 331.4
B 12 111 43376 125.82 1723 1676 331.4
C 15 214 625064 1579.1 1696 1706 394.8
C 14 53 143949 360.33 1696 1706 394.8
C 15 208 72979 180.55 1696 1706 394.8
D 2 16 20226081 66942.19 1241 1207 302.1
D 12 235 3672107 12150.29 1241 1207 302.1
D 12 6 1709400 5653.94 1241 1207 302.1

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