ASTROSAT CZTI

Data Quality Report

Orbit 45159

Creation date: 2024-06-27T23:10:04.280452
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/AS1A13_049T04_9000006048_45159cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45159cztM0_level2_quad_clean.evt
Size (bytes)692,732,160122,114,880
Size660.6 MB 116.5 MB
Events in quadrant A9,028,562756,953
Events in quadrant B4,360,097842,795
Events in quadrant C4,094,415850,292
Events in quadrant D7,536,432688,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323650
B0183700
C0180230
D0279430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8040119214.825871%
B80404815.982587%
C80412683.332919%
D8041121215.072752%

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 8040 8040 594 594 7.39% 7.39%
B 8040 8040 87 87 1.08% 1.08%
C 8041 8041 92 92 1.14% 1.14%
D 8041 8041 801 801 9.96% 9.96%

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 10 83 2685660 14087.26 915 892 190.6
A 15 223 2474416 12978.84 915 892 190.6
A 13 248 201877 1054.59 915 892 190.6
B 5 172 359435 1893.22 940 912 189.4
B 4 170 95021 496.95 940 912 189.4
B 0 183 52330 271.52 940 912 189.4
C 1 3 316625 1416.39 939 942 222.9
C 14 254 49025 215.74 939 942 222.9
C 12 2 37981 166.18 939 942 222.9
D 1 52 1603366 7075.57 898 869 226.5
D 13 249 1088428 4801.95 898 869 226.5
D 5 235 662284 2920.37 898 869 226.5

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