ASTROSAT CZTI

Data Quality Report

Orbit 32255

Creation date: 2024-06-27T20:38:08.817654
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_32255cztM0_level2.evt modeM0/AS1T04_054T01_9000004694_32255cztM0_level2_quad_clean.evt
Size (bytes)389,995,20045,005,760
Size371.9 MB 42.9 MB
Events in quadrant A1,994,171281,880
Events in quadrant B3,558,633263,162
Events in quadrant C2,230,481271,011
Events in quadrant D3,746,289254,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086121
B0136911
C091461
D0141271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41421012.438436%
B41423348.063737%
C41422255.432158%
D41422425.842588%

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 4642 4143 0 0 0.00% 0.00%
B 4642 4142 130 130 2.80% 3.14%
C 4642 4143 12 12 0.26% 0.29%
D 4642 4143 104 104 2.24% 2.51%

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 13 6 8292 74.4 514 504 104.7
A 13 254 7929 70.94 514 504 104.7
A 3 137 5636 49.03 514 504 104.7
B 6 159 1064904 11064.77 484 470 96.2
B 4 80 557079 5785.94 484 470 96.2
B 0 190 16056 162.01 484 470 96.2
C 14 238 107251 924.58 486 488 115.5
C 0 10 94836 817.07 486 488 115.5
C 3 233 71311 613.34 486 488 115.5
D 8 195 1425025 12170.9 486 472 117.0
D 12 233 357268 3048.34 486 472 117.0
D 13 249 58550 496.2 486 472 117.0

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