ASTROSAT CZTI

Data Quality Report

Orbit 46497

Creation date: 2024-06-27T23:23:52.501522
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_068T06_9000006220_46497cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46497cztM0_level2_quad_clean.evt
Size (bytes)515,793,600104,976,000
Size491.9 MB 100.1 MB
Events in quadrant A5,909,819700,921
Events in quadrant B4,054,629706,719
Events in quadrant C3,370,293701,053
Events in quadrant D5,233,662597,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217433
B0167142
C0150362
D0203392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67611982.928561%
B67613465.117586%
C6761931.375536%
D67615968.815264%

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 7051 6762 1 1 0.01% 0.01%
B 7051 6762 193 193 2.74% 2.85%
C 7051 6764 34 34 0.48% 0.50%
D 7051 6763 428 428 6.07% 6.33%

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 2857671 18226.12 747 729 156.7
A 14 235 126132 800.02 747 729 156.7
A 13 254 12208 73.23 747 729 156.7
B 5 255 849743 5711.95 739 714 148.6
B 5 172 110895 741.26 739 714 148.6
B 5 250 55324 367.4 739 714 148.6
C 9 54 240597 1357.14 744 751 176.7
C 14 254 188958 1064.95 744 751 176.7
C 1 3 18627 101.15 744 751 176.7
D 13 249 1123109 6165.07 710 688 182.1
D 12 128 690808 3790.59 710 688 182.1
D 1 52 313343 1717.31 710 688 182.1

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