ASTROSAT CZTI

Data Quality Report

Orbit 41917

Creation date: 2024-06-27T22:34:27.547236
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_118T01_9000005718_41917cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41917cztM0_level2_quad_clean.evt
Size (bytes)1,239,393,600122,025,600
Size1.2 GB 116.4 MB
Events in quadrant A8,604,999930,535
Events in quadrant B5,057,1061,056,243
Events in quadrant C5,036,1341,013,966
Events in quadrant D26,424,60116,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319122
B0217422
C02125710
D0845882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9756122612.566626%
B9756770.789258%
C97562052.101271%
D9756962898.687987%

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 12501 9758 903 903 7.22% 9.25%
B 12501 9758 59 59 0.47% 0.60%
C 12501 9758 197 197 1.58% 2.02%
D 12501 9758 9503 9503 76.02% 97.39%

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 14 24 3886814 19390.44 982 962 200.4
A 10 83 834649 4160.11 982 962 200.4
A 3 1 27830 134.07 982 962 200.4
B 5 255 340973 1704.66 1039 1008 199.4
B 0 156 150291 748.54 1039 1008 199.4
B 0 190 125586 624.66 1039 1008 199.4
C 0 10 620778 2636.53 1009 1015 235.1
C 15 214 379631 1610.67 1009 1015 235.1
C 15 111 54299 226.68 1009 1015 235.1
D 12 79 24215555 272098.8 358 347 89.0
D 5 222 243866 2736.35 358 347 89.0
D 13 249 185739 2083.19 358 347 89.0

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