ASTROSAT CZTI

Data Quality Report

Orbit 26780

Creation date: 2024-06-27T19:32:50.008286
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_027T01_9000003862_26780cztM0_level2.evt modeM0/AS1A07_027T01_9000003862_26780cztM0_level2_quad_clean.evt
Size (bytes)470,986,56053,049,600
Size449.2 MB 50.6 MB
Events in quadrant A2,692,686339,106
Events in quadrant B3,020,824334,993
Events in quadrant C2,179,517333,450
Events in quadrant D6,084,925301,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108760
B0115100
C089310
D0209960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4209110.261345%
B42092546.034688%
C4210130.308789%
D4210126229.976247%

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 4209 4209 1 1 0.02% 0.02%
B 4209 4209 213 213 5.06% 5.06%
C 4210 4210 2 2 0.05% 0.05%
D 4210 4210 1066 1066 25.32% 25.32%

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 0 13 578660 5301.85 548 540 109.0
A 13 254 6464 54.33 548 540 109.0
A 0 226 4645 37.65 548 540 109.0
B 0 189 844761 8589.82 529 517 98.3
B 15 32 65136 657.47 529 517 98.3
B 0 190 21855 217.11 529 517 98.3
C 14 238 87069 708.19 528 532 122.2
C 15 208 15566 123.03 528 532 122.2
C 2 16 13110 102.93 528 532 122.2
D 7 80 3584926 31805.77 472 461 112.7
D 1 52 369281 3272.62 472 461 112.7
D 1 239 177504 1570.94 472 461 112.7

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