ASTROSAT CZTI

Data Quality Report

Orbit 45175

Creation date: 2024-06-27T23:10:14.969426
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_049T05_9000006050_45175cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45175cztM0_level2_quad_clean.evt
Size (bytes)582,030,720113,840,640
Size555.1 MB 108.6 MB
Events in quadrant A6,212,703758,065
Events in quadrant B3,912,864784,830
Events in quadrant C3,630,525780,221
Events in quadrant D7,221,258614,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235370
B0163930
C0159010
D0265550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73173434.687714%
B73172052.801695%
C7317590.806341%
D7317119416.318163%

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 7317 7317 114 114 1.56% 1.56%
B 7317 7317 18 18 0.25% 0.25%
C 7317 7317 28 28 0.38% 0.38%
D 7317 7317 970 970 13.26% 13.26%

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 2517598 14576.55 827 809 172.7
A 15 223 305482 1764.58 827 809 172.7
A 15 174 164829 949.96 827 809 172.7
B 3 112 365117 2180.19 831 803 167.1
B 0 183 81140 480.77 831 803 167.1
B 4 158 56271 331.94 831 803 167.1
C 3 233 112923 581.33 822 827 192.8
C 15 208 81315 417.41 822 827 192.8
C 14 254 81051 416.04 822 827 192.8
D 13 249 2292518 11866.55 768 743 193.1
D 4 232 367325 1898.12 768 743 193.1
D 5 222 360360 1862.06 768 743 193.1

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