ASTROSAT CZTI

Data Quality Report

Orbit 10450

Creation date: 2024-06-27T15:59:22.852223
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/AS1A03_126T01_9000001512_10450cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10450cztM0_level2_quad_clean.evt
Size (bytes)4,214,102,400559,463,040
Size3.9 GB 533.5 MB
Events in quadrant A55,444,9353,134,624
Events in quadrant B25,752,4483,694,297
Events in quadrant C19,689,9443,673,596
Events in quadrant D23,835,4123,478,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090829
B090829
C090828
D090426

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01969753328
B01085353385
C0911353051
D01021083424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A430911256229.152259%
B4311716893.917248%
C431361620.375556%
D432493970.917940%

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 51249 43289 11836 11836 23.10% 27.34%
B 51249 43295 1024 1024 2.00% 2.37%
C 51249 43326 15 15 0.03% 0.03%
D 51249 43322 229 229 0.45% 0.53%

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 13 251 37052577 41322.05 4472 4376 896.6
A 3 80 646916 716.66 4472 4376 896.6
A 15 223 239569 262.32 4472 4376 896.6
B 4 239 5040692 5327.17 5054 4934 945.3
B 0 214 417499 436.44 5054 4934 945.3
B 11 51 212983 220.09 5054 4934 945.3
C 14 234 133350 111.24 5011 5041 1153.4
C 13 61 37045 27.75 5011 5041 1153.4
C 14 67 22109 14.8 5011 5041 1153.4
D 8 195 2294636 1921.6 4967 4830 1191.6
D 1 52 559559 465.53 4967 4830 1191.6
D 1 20 504956 419.7 4967 4830 1191.6

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