ASTROSAT CZTI

Data Quality Report

Orbit 26086

Creation date: 2024-06-27T19:24:53.171421
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/AS1A09_126T01_9000003772_26086cztM0_level2.evt modeM0/AS1A09_126T01_9000003772_26086cztM0_level2_quad_clean.evt
Size (bytes)827,429,760185,627,520
Size789.1 MB 177.0 MB
Events in quadrant A6,239,4161,235,551
Events in quadrant B5,864,5411,250,127
Events in quadrant C5,724,4291,185,238
Events in quadrant D6,477,6981,181,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252390
B0238100
C0236550
D0264370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111271941.743507%
B111272041.833378%
C111282682.408339%
D111281541.383896%

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 13287 11127 12 12 0.09% 0.11%
B 13287 11128 3 3 0.02% 0.03%
C 13288 11128 0 0 0.00% 0.00%
D 13288 11129 15 15 0.11% 0.13%

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 440064 1492.47 1486 1462 293.9
A 5 98 73051 243.6 1486 1462 293.9
A 13 254 15989 49.43 1486 1462 293.9
B 0 190 55278 196.46 1462 1430 274.1
B 12 111 32341 112.78 1462 1430 274.1
B 11 111 29865 103.75 1462 1430 274.1
C 14 238 229653 702.48 1404 1416 324.9
C 3 233 20323 58.19 1404 1416 324.9
C 13 61 9665 25.39 1404 1416 324.9
D 7 80 672990 1983.06 1435 1406 338.7
D 1 52 216132 634.05 1435 1406 338.7
D 12 233 117163 341.81 1435 1406 338.7

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