ASTROSAT CZTI

Data Quality Report

Orbit 48318

Creation date: 2024-09-06T13:39:18.363959
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_029T01_9000006422_48318cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48318cztM0_level2_quad_clean.evt
Size (bytes)531,360,000109,491,840
Size506.7 MB 104.4 MB
Events in quadrant A7,351,055728,976
Events in quadrant B3,722,432763,028
Events in quadrant C3,138,160735,580
Events in quadrant D4,934,444617,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267691
B0155381
C0141291
D0192461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67433915.798606%
B67442193.247331%
C67431231.824114%
D674371110.544268%

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 7703 6743 20 20 0.26% 0.30%
B 7704 6744 19 19 0.25% 0.28%
C 7703 6744 23 23 0.30% 0.34%
D 7703 6744 495 495 6.43% 7.34%

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 4157871 25026.72 789 771 166.1
A 13 248 43785 258.95 789 771 166.1
A 7 3 40180 237.25 789 771 166.1
B 4 21 318150 2019.48 792 769 157.2
B 0 200 169227 1071.89 792 769 157.2
B 0 198 45265 283.13 792 769 157.2
C 12 2 82710 444.5 781 786 184.3
C 13 61 5409 25.08 781 786 184.3
C 3 233 5249 24.21 781 786 184.3
D 12 233 1484216 7722.08 763 738 192.1
D 5 222 102749 531.01 763 738 192.1
D 10 204 97468 503.52 763 738 192.1

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