ASTROSAT CZTI

Data Quality Report

Orbit 52671

Creation date: 2025-06-24T02:05:58.565737
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/AS1C09_011T07_9000006480_52671cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52671cztM0_level2_quad_clean.evt
Size (bytes)614,390,40085,158,720
Size585.9 MB 81.2 MB
Events in quadrant A4,497,238591,025
Events in quadrant B6,982,419538,362
Events in quadrant C3,987,476552,625
Events in quadrant D6,810,877476,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174301
B0248821
C0161741
D0244091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60071031.714666%
B6008106217.676431%
C60082774.610519%
D600881613.581891%

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 7212 6007 48 48 0.67% 0.80%
B 7213 6009 901 901 12.49% 14.99%
C 7213 6008 213 213 2.95% 3.55%
D 7213 6008 878 878 12.17% 14.61%

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 3 14 1525003 9689.25 628 612 157.3
A 15 239 151693 960.29 628 612 157.3
A 12 80 63930 402.46 628 612 157.3
B 10 128 3642038 29663.03 591 571 122.8
B 2 249 368894 3000.32 591 571 122.8
B 1 255 102674 831.72 591 571 122.8
C 2 12 360172 2129.65 611 607 168.8
C 13 3 241814 1428.63 611 607 168.8
C 12 252 206138 1217.33 611 607 168.8
D 1 7 1497076 8732.58 589 561 171.4
D 6 42 1128886 6584.09 589 561 171.4
D 8 176 549489 3203.15 589 561 171.4

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