ASTROSAT CZTI

Data Quality Report

Orbit 17321

Creation date: 2024-06-27T17:34:58.016457
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/AS1A05_010T02_9000002556_17321cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17321cztM0_level2_quad_clean.evt
Size (bytes)311,745,60062,602,560
Size297.3 MB 59.7 MB
Events in quadrant A2,224,644396,188
Events in quadrant B2,262,190397,117
Events in quadrant C2,240,483379,801
Events in quadrant D2,379,149378,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099361
B099901
C0100181
D0104921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4906120.244598%
B4906190.387281%
C4906320.652263%
D4906340.693029%

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 4906 4906 0 0 0.00% 0.00%
B 4906 4906 0 0 0.00% 0.00%
C 4906 4906 0 0 0.00% 0.00%
D 4906 4906 20 20 0.41% 0.41%

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 0 226 5100 38.32 578 567 118.3
A 3 137 4362 32.08 578 567 118.3
A 12 194 4124 30.07 578 567 118.3
B 12 111 13197 113.34 575 562 111.5
B 0 230 12229 104.66 575 562 111.5
B 11 111 11802 100.83 575 562 111.5
C 14 238 85235 650.08 550 552 130.3
C 5 112 6470 45.43 550 552 130.3
C 3 233 4074 27.04 550 552 130.3
D 5 222 102539 748.79 557 540 136.2
D 13 238 41527 300.89 557 540 136.2
D 9 65 39909 289.01 557 540 136.2

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