ASTROSAT CZTI

Data Quality Report

Orbit 36502

Creation date: 2024-06-27T21:27:39.014218
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_049T05_9000005212_36502cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36502cztM0_level2_quad_clean.evt
Size (bytes)417,818,88058,556,160
Size398.5 MB 55.8 MB
Events in quadrant A2,727,496352,334
Events in quadrant B3,115,528350,297
Events in quadrant C2,945,455346,287
Events in quadrant D3,484,038331,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116003
B0128582
C0120732
D0141872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560280.142806%
B56021142.034988%
C5602961.713674%
D5602981.749375%

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 7244 5603 3 3 0.04% 0.05%
B 7244 5603 61 61 0.84% 1.09%
C 7244 5603 54 54 0.75% 0.96%
D 7244 5603 62 62 0.86% 1.11%

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 205957 1578.45 648 636 130.1
A 13 254 9201 65.85 648 636 130.1
A 3 137 6778 47.22 648 636 130.1
B 5 172 300065 2455.78 637 621 121.9
B 4 171 117239 956.4 637 621 121.9
B 5 255 90770 739.32 637 621 121.9
C 0 10 279802 1928.62 621 625 144.8
C 15 214 241590 1664.64 621 625 144.8
C 13 61 4142 24.3 621 625 144.8
D 12 227 579292 3809.96 624 606 151.9
D 13 249 138229 906.08 624 606 151.9
D 2 153 102213 668.96 624 606 151.9

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