ASTROSAT CZTI

Data Quality Report

Orbit 38278

Creation date: 2024-06-27T21:50:40.398519
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/AS1A07_145T01_9000005370_38278cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38278cztM0_level2_quad_clean.evt
Size (bytes)410,284,80097,038,720
Size391.3 MB 92.5 MB
Events in quadrant A2,986,331644,597
Events in quadrant B2,691,847665,206
Events in quadrant C3,825,086633,707
Events in quadrant D5,232,620588,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123283
B0119272
C0149582
D0200982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5814100.171999%
B5814130.223598%
C58141352.321981%
D5814971.668387%

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 8918 5816 6 6 0.07% 0.10%
B 8918 5816 3 3 0.03% 0.05%
C 8918 5816 136 136 1.53% 2.34%
D 8918 5816 74 74 0.83% 1.27%

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 409504 3101.43 647 633 131.8
A 12 189 37658 280.85 647 633 131.8
A 13 6 16259 118.53 647 633 131.8
B 5 172 77789 615.53 647 629 125.4
B 0 230 19925 153.93 647 629 125.4
B 12 111 15812 121.12 647 629 125.4
C 9 236 554842 3772.5 629 633 146.9
C 2 16 489276 3326.19 629 633 146.9
C 15 214 243836 1655.48 629 633 146.9
D 10 203 1920238 12467.62 628 611 154.0
D 12 235 467435 3031.93 628 611 154.0
D 1 20 87654 565.33 628 611 154.0

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