ASTROSAT CZTI

Data Quality Report

Orbit 46665

Creation date: 2024-06-27T23:26:08.016843
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_039T01_9000006246_46665cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46665cztM0_level2_quad_clean.evt
Size (bytes)427,798,08099,020,160
Size408.0 MB 94.4 MB
Events in quadrant A5,811,450643,337
Events in quadrant B3,466,331670,148
Events in quadrant C2,607,822658,664
Events in quadrant D3,464,257589,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214750
B0145680
C0127620
D0148890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521903.039028%
B62521582.527191%
C6252300.479846%
D62521532.447217%

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 7167 6253 32 32 0.45% 0.51%
B 7167 6253 51 51 0.71% 0.82%
C 7167 6253 2 2 0.03% 0.03%
D 7167 6253 85 85 1.19% 1.36%

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 3130398 22974.4 653 640 136.2
A 9 191 94248 687.14 653 640 136.2
A 0 247 23399 167.07 653 640 136.2
B 0 189 239555 1844.24 660 639 129.5
B 4 171 212412 1634.72 660 639 129.5
B 5 32 130806 1004.79 660 639 129.5
C 1 241 31123 201.58 651 653 151.2
C 14 254 14580 92.13 651 653 151.2
C 12 250 12322 77.2 651 653 151.2
D 1 52 184321 1157.55 641 621 158.7
D 13 249 172094 1080.5 641 621 158.7
D 10 181 141210 885.9 641 621 158.7

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