ASTROSAT CZTI

Data Quality Report

Orbit 43548

Creation date: 2024-06-27T22:53:03.285939
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_9000005880_43548cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43548cztM0_level2_quad_clean.evt
Size (bytes)1,050,001,92070,156,800
Size1001.4 MB 66.9 MB
Events in quadrant A7,281,965656,907
Events in quadrant B3,283,991706,180
Events in quadrant C15,067,854265,890
Events in quadrant D12,773,29472,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258462
B0136572
C0486956
D0420152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595989014.935392%
B59591342.248699%
C5958573296.206781%
D5959595899.983219%

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 7074 5961 391 391 5.53% 6.56%
B 7074 5961 33 33 0.47% 0.55%
C 7073 5958 5331 5331 75.37% 89.48%
D 7073 5958 4321 4321 61.09% 72.52%

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 0 228 2369601 17589.36 649 638 134.7
A 15 222 1140365 8462.38 649 638 134.7
A 10 83 626939 4650.23 649 638 134.7
B 3 42 247679 1843.56 682 662 134.0
B 3 25 99109 734.74 682 662 134.0
B 0 155 62265 459.76 682 662 134.0
C 15 142 4920214 75112.11 275 277 65.5
C 15 126 3692842 56373.96 275 277 65.5
C 15 174 3153856 48145.33 275 277 65.5
D 4 216 8440740 242444.87 94 88 34.8
D 4 212 1433849 41182.59 94 88 34.8
D 8 48 490159 14076.53 94 88 34.8

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