ASTROSAT CZTI

Data Quality Report

Orbit 38123

Creation date: 2024-06-27T21:48:41.532260
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/AS1A11_065T21_9000005364_38123cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38123cztM0_level2_quad_clean.evt
Size (bytes)374,993,28096,557,760
Size357.6 MB 92.1 MB
Events in quadrant A3,643,843654,040
Events in quadrant B3,047,464654,114
Events in quadrant C3,252,777626,089
Events in quadrant D3,489,850587,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145763
B0128972
C0130762
D0142392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5747651.131025%
B57471252.175048%
C57471162.018444%
D5747611.061423%

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 7271 5748 36 36 0.50% 0.63%
B 7271 5748 75 75 1.03% 1.30%
C 7271 5748 109 109 1.50% 1.90%
D 7271 5748 50 50 0.69% 0.87%

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 12 16 504876 3806.05 657 643 132.5
A 10 83 394725 2974.61 657 643 132.5
A 12 189 104498 783.92 657 643 132.5
B 5 172 203350 1613.8 648 629 125.6
B 0 229 201472 1598.85 648 629 125.6
B 0 186 54051 425.28 648 629 125.6
C 5 250 428565 2839.54 641 642 150.7
C 15 214 237892 1574.31 641 642 150.7
C 5 233 40045 261.46 641 642 150.7
D 1 52 215939 1371.08 642 624 157.0
D 12 233 211173 1340.73 642 624 157.0
D 13 249 97442 616.52 642 624 157.0

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