ASTROSAT CZTI

Data Quality Report

Orbit 46864

Creation date: 2024-06-27T23:28:39.335849
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_053T01_9000006274_46864cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46864cztM0_level2_quad_clean.evt
Size (bytes)464,883,840103,262,400
Size443.3 MB 98.5 MB
Events in quadrant A6,021,064691,168
Events in quadrant B3,400,417713,749
Events in quadrant C2,794,301685,049
Events in quadrant D4,509,295602,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218821
B0141701
C0129541
D0176091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62302013.226324%
B6231941.508586%
C6231360.577756%
D62314657.462687%

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 7325 6231 25 25 0.34% 0.40%
B 7326 6232 16 16 0.22% 0.26%
C 7326 6232 1 1 0.01% 0.02%
D 7326 6232 387 387 5.28% 6.21%

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 3172001 21998.4 701 685 144.2
A 13 248 73394 504.36 701 685 144.2
A 7 3 22714 152.81 701 685 144.2
B 3 112 488478 3585.01 696 676 136.1
B 0 198 38588 278.63 696 676 136.1
B 5 173 34137 245.92 696 676 136.1
C 1 241 65407 406.55 683 688 159.2
C 14 254 40459 249.83 683 688 159.2
C 0 207 18722 113.29 683 688 159.2
D 13 249 861852 5098.36 676 654 168.9
D 1 52 617755 3653.28 676 654 168.9
D 5 171 240569 1420.31 676 654 168.9

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