ASTROSAT CZTI

Data Quality Report

Orbit 08215

Creation date: 2024-06-27T15:29:32.936350
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/AS1C02_041T01_9000001136_08215cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08215cztM0_level2_quad_clean.evt
Size (bytes)1,243,025,280211,536,000
Size1.2 GB 201.7 MB
Events in quadrant A8,784,2341,297,983
Events in quadrant B9,261,7781,299,607
Events in quadrant C9,276,5481,275,138
Events in quadrant D9,056,9491,244,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391638
B0401707
C0405245
D0403029

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187061600.855341%
B187062421.293703%
C18707650.347464%
D187051490.796578%

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 21062 18712 58 58 0.28% 0.31%
B 21062 18712 88 88 0.42% 0.47%
C 21062 18712 0 0 0.00% 0.00%
D 21062 18712 85 85 0.40% 0.45%

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 5 16 358305 810.0 2164 2121 439.7
A 15 79 71029 156.7 2164 2121 439.7
A 8 15 20939 42.79 2164 2121 439.7
B 10 16 459145 1098.92 2173 2122 415.9
B 0 214 202254 481.22 2173 2122 415.9
B 4 81 89527 210.17 2173 2122 415.9
C 9 68 1096430 2238.62 2091 2100 488.8
C 13 61 16159 28.76 2091 2100 488.8
C 8 128 15549 27.51 2091 2100 488.8
D 1 52 448346 790.86 2075 2028 564.3
D 2 152 194201 340.52 2075 2028 564.3
D 1 7 185874 325.77 2075 2028 564.3

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