ASTROSAT CZTI

Data Quality Report

Orbit 34676

Creation date: 2022-07-18T17:00:18.898657
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/AS1T04_078T01_9000004962_34676cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34676cztM0_level2_quad_clean.evt
Size (bytes)341,651,52047,681,280
Size325.8 MB 45.5 MB
Events in quadrant A1,847,804299,661
Events in quadrant B2,722,765294,121
Events in quadrant C2,043,035301,744
Events in quadrant D3,476,814281,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079452
B0105691
C083351
D0129841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3765180.478088%
B37652857.569721%
C3765270.717131%
D37651463.877822%

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 5198 3766 4 4 0.08% 0.11%
B 5198 3766 182 182 3.50% 4.83%
C 5198 3766 19 19 0.37% 0.50%
D 5198 3766 94 94 1.81% 2.50%

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 15 169 45834 498.35 447 439 91.1
A 10 83 25768 278.06 447 439 91.1
A 9 143 18056 193.4 447 439 91.1
B 5 172 744101 8824.35 430 419 84.3
B 5 255 158392 1874.47 430 419 84.3
B 0 190 62561 737.36 430 419 84.3
C 15 214 158585 1554.78 431 434 101.7
C 14 67 110216 1079.27 431 434 101.7
C 0 10 75591 738.87 431 434 101.7
D 8 195 1101578 10475.61 428 417 105.1
D 7 223 141619 1343.29 428 417 105.1
D 13 249 118050 1119.07 428 417 105.1

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