ASTROSAT CZTI

Data Quality Report

Orbit 39567

Creation date: 2024-06-27T22:06:15.085507
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/AS1A12_018T01_9000005488_39567cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39567cztM0_level2_quad_clean.evt
Size (bytes)506,727,36092,041,920
Size483.3 MB 87.8 MB
Events in quadrant A4,670,182626,242
Events in quadrant B2,456,365647,897
Events in quadrant C6,988,665561,612
Events in quadrant D4,190,405543,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179703
B0117762
C0249082
D0166012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5829390.669068%
B582980.137245%
C582973912.677989%
D58293846.587751%

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 7202 5830 16 16 0.22% 0.27%
B 7202 5830 1 1 0.01% 0.02%
C 7202 5830 712 712 9.89% 12.21%
D 7202 5830 362 362 5.03% 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 15 222 1728161 13820.64 607 595 125.0
A 10 83 460930 3682.71 607 595 125.0
A 13 248 44871 354.21 607 595 125.0
B 5 255 46735 390.15 609 591 118.3
B 12 111 14935 121.28 609 591 118.3
B 11 111 13718 110.99 609 591 118.3
C 9 187 2635482 19705.56 574 576 133.7
C 15 208 1817182 13585.77 574 576 133.7
C 15 214 236797 1766.62 574 576 133.7
D 12 227 931728 6555.48 580 564 142.0
D 1 47 716984 5043.67 580 564 142.0
D 13 249 153435 1076.23 580 564 142.0

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