ASTROSAT CZTI

Data Quality Report

Orbit 38948

Creation date: 2024-06-27T21:58:30.736176
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/AS1T05_064T01_9000005416_38948cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38948cztM0_level2_quad_clean.evt
Size (bytes)1,021,561,920262,704,960
Size974.2 MB 250.5 MB
Events in quadrant A8,324,4231,771,517
Events in quadrant B7,819,8921,797,552
Events in quadrant C8,333,1871,741,675
Events in quadrant D12,090,8971,532,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343165
B0340124
C0347924
D0467464

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16102870.540306%
B161021320.819774%
C16102220.136629%
D161026914.291392%

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 21592 16106 58 58 0.27% 0.36%
B 21592 16106 99 99 0.46% 0.61%
C 21592 16106 2 2 0.01% 0.01%
D 21592 16106 684 684 3.17% 4.25%

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 1111537 3055.52 1795 1753 363.2
A 13 248 168323 458.61 1795 1753 363.2
A 9 143 83508 225.09 1795 1753 363.2
B 5 172 386968 1131.78 1777 1726 340.4
B 5 200 218288 636.23 1777 1726 340.4
B 0 230 74996 215.26 1777 1726 340.4
C 14 254 764492 1875.55 1757 1767 406.7
C 15 214 683159 1675.55 1757 1767 406.7
C 1 128 11952 25.04 1757 1767 406.7
D 12 227 1409812 3339.55 1733 1684 421.7
D 12 235 826472 1956.09 1733 1684 421.7
D 12 233 778573 1842.49 1733 1684 421.7

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