ASTROSAT CZTI

Data Quality Report

Orbit 36142

Creation date: 2024-06-27T21:22:52.251153
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/AS1T04_069T01_9000005158_36142cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36142cztM0_level2_quad_clean.evt
Size (bytes)439,119,36064,281,600
Size418.8 MB 61.3 MB
Events in quadrant A2,647,310415,519
Events in quadrant B4,033,126385,876
Events in quadrant C2,861,949392,054
Events in quadrant D3,393,295378,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0155502
C0117892
D0136752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5345190.355472%
B53454808.980355%
C53451302.432180%
D53451302.432180%

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 7108 5346 2 2 0.03% 0.04%
B 7108 5346 357 357 5.02% 6.68%
C 7108 5346 92 92 1.29% 1.72%
D 7108 5346 118 118 1.66% 2.21%

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 184287 1446.81 621 609 127.0
A 9 143 47339 368.09 621 609 127.0
A 8 144 13373 100.54 621 609 127.0
B 5 172 1551563 13468.39 592 575 115.2
B 4 171 61397 528.16 592 575 115.2
B 0 190 28677 244.03 592 575 115.2
C 0 10 325924 2359.01 589 593 137.9
C 15 214 224118 1620.8 589 593 137.9
C 0 207 6311 41.46 589 593 137.9
D 1 52 424874 2919.08 590 573 145.4
D 2 249 230348 1580.79 590 573 145.4
D 12 6 112205 768.0 590 573 145.4

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