ASTROSAT CZTI

Data Quality Report

Orbit 19875

Creation date: 2024-06-27T18:08:11.321375
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/AS1T03_118T01_9000002962_19875cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19875cztM0_level2_quad_clean.evt
Size (bytes)483,644,160103,826,880
Size461.2 MB 99.0 MB
Events in quadrant A3,570,824688,174
Events in quadrant B3,319,543701,986
Events in quadrant C4,026,137657,285
Events in quadrant D3,303,044657,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145792
B0137792
C0158172
D0137302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298440.698634%
B6298741.174976%
C62984296.811686%
D6298300.476342%

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 7498 6299 16 16 0.21% 0.25%
B 7498 6299 18 18 0.24% 0.29%
C 7498 6299 226 226 3.01% 3.59%
D 7498 6298 7 7 0.09% 0.11%

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 14 238 442493 2731.61 803 789 161.7
A 11 29 27318 164.06 803 789 161.7
A 12 16 11027 63.31 803 789 161.7
B 7 220 54120 350.7 809 790 152.1
B 3 64 23611 150.07 809 790 152.1
B 0 197 19754 124.71 809 790 152.1
C 9 221 884044 4848.1 774 783 182.2
C 14 238 120784 658.67 774 783 182.2
C 13 61 5356 25.1 774 783 182.2
D 1 52 175011 903.64 792 769 192.8
D 2 184 58178 297.73 792 769 192.8
D 7 238 53133 271.57 792 769 192.8

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