ASTROSAT CZTI

Data Quality Report

Orbit 25754

Creation date: 2024-06-27T19:21:08.386476
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/AS1A07_027T11_9000003752_25754cztM0_level2.evt modeM0/AS1A07_027T11_9000003752_25754cztM0_level2_quad_clean.evt
Size (bytes)240,756,48040,602,240
Size229.6 MB 38.7 MB
Events in quadrant A1,694,063250,616
Events in quadrant B1,752,749253,930
Events in quadrant C1,782,778243,441
Events in quadrant D1,830,570241,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071070
B071830
C072700
D075350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3374661.956135%
B3374992.934203%
C3373842.490365%
D3374571.689389%

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 3924 3374 0 0 0.00% 0.00%
B 3924 3374 0 0 0.00% 0.00%
C 3924 3375 1 1 0.03% 0.03%
D 3924 3374 19 19 0.48% 0.56%

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 6 16 6225 64.66 437 426 89.7
A 13 254 4669 47.31 437 426 89.7
A 3 137 4266 42.81 437 426 89.7
B 0 219 13447 148.55 437 425 87.7
B 0 245 11899 130.89 437 425 87.7
B 0 190 10851 118.94 437 425 87.7
C 3 233 66065 637.83 423 426 102.9
C 14 238 64354 621.2 423 426 102.9
C 14 225 4871 43.19 423 426 102.9
D 1 52 66656 642.85 425 415 103.0
D 8 195 62849 605.91 425 415 103.0
D 13 104 53075 511.05 425 415 103.0

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