ASTROSAT CZTI

Data Quality Report

Orbit 46701

Creation date: 2024-06-27T23:26:37.647053
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_037T01_9000006256_46701cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46701cztM0_level2_quad_clean.evt
Size (bytes)602,392,320106,407,360
Size574.5 MB 101.5 MB
Events in quadrant A7,072,489718,397
Events in quadrant B4,038,403733,881
Events in quadrant C4,407,496698,053
Events in quadrant D6,242,993588,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261041
B0167424
C0179691
D0232101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69372733.935419%
B69362473.561130%
C69381972.839435%
D693791513.190140%

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 7747 6937 72 72 0.93% 1.04%
B 7747 6938 74 74 0.96% 1.07%
C 7748 6938 120 120 1.55% 1.73%
D 7748 6938 749 749 9.67% 10.80%

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 3682360 22972.62 765 749 160.3
A 15 235 164891 1024.22 765 749 160.3
A 13 248 116463 722.04 765 749 160.3
B 4 171 461858 3022.4 759 736 152.6
B 15 36 218873 1429.77 759 736 152.6
B 0 198 84586 549.59 759 736 152.6
C 5 250 1005628 5707.37 743 747 176.1
C 12 2 337310 1911.56 743 747 176.1
C 14 254 76251 428.84 743 747 176.1
D 1 52 2047332 11517.79 707 685 177.7
D 13 249 487822 2741.43 707 685 177.7
D 12 128 203722 1142.62 707 685 177.7

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