ASTROSAT CZTI

Data Quality Report

Orbit 32248

Creation date: 2024-06-27T20:38:03.187600
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/AS1T04_054T01_9000004694_32248cztM0_level2.evt modeM0/AS1T04_054T01_9000004694_32248cztM0_level2_quad_clean.evt
Size (bytes)663,131,520100,975,680
Size632.4 MB 96.3 MB
Events in quadrant A3,352,129679,213
Events in quadrant B5,406,472680,106
Events in quadrant C4,002,597648,291
Events in quadrant D6,888,262602,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142693
B0203992
C0160382
D0247842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424470.731631%
B64241392.163761%
C64242774.311955%
D642467010.429639%

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 7584 6425 4 4 0.05% 0.06%
B 7584 6425 28 28 0.37% 0.44%
C 7584 6425 91 91 1.20% 1.42%
D 7584 6425 559 559 7.37% 8.70%

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 0 6 137361 829.28 828 814 164.7
A 0 226 17924 103.91 828 814 164.7
A 13 254 13140 74.86 828 814 164.7
B 6 159 1855979 12043.53 822 801 154.0
B 5 172 147477 952.2 822 801 154.0
B 0 229 111980 721.76 822 801 154.0
C 0 10 402000 2171.72 793 799 184.7
C 3 233 323739 1748.09 793 799 184.7
C 14 238 129836 698.48 793 799 184.7
D 8 195 2405631 12883.0 786 767 186.7
D 12 233 1276997 6836.84 786 767 186.7
D 12 218 135860 723.7 786 767 186.7

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