ASTROSAT CZTI

Data Quality Report

Orbit 37500

Creation date: 2024-06-27T21:40:49.018926
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_030T02_9000005328_37500cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37500cztM0_level2_quad_clean.evt
Size (bytes)1,205,360,640166,245,120
Size1.1 GB 158.5 MB
Events in quadrant A8,262,4331,023,811
Events in quadrant B9,360,193994,401
Events in quadrant C8,395,844994,350
Events in quadrant D9,430,931944,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339355
B0378124
C0341664
D0386534

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15624420.268817%
B156245563.558628%
C156241530.979263%
D156244262.726575%

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 19800 15627 18 18 0.09% 0.12%
B 19800 15627 401 401 2.03% 2.57%
C 19800 15627 136 136 0.69% 0.87%
D 19800 15627 378 378 1.91% 2.42%

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 744510 2062.99 1791 1755 360.0
A 9 143 159512 438.17 1791 1755 360.0
A 6 10 125871 344.73 1791 1755 360.0
B 5 172 1612298 4809.97 1758 1710 334.8
B 15 35 171375 506.7 1758 1710 334.8
B 5 184 158692 468.82 1758 1710 334.8
C 15 214 667020 1634.6 1744 1754 407.0
C 14 254 637019 1560.88 1744 1754 407.0
C 0 10 178690 434.74 1744 1754 407.0
D 13 249 1177513 2779.76 1732 1686 423.0
D 2 249 543022 1279.77 1732 1686 423.0
D 2 250 315074 740.88 1732 1686 423.0

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