ASTROSAT CZTI

Data Quality Report

Orbit 36939

Creation date: 2024-06-27T21:33:22.903393
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_024T01_9000005250_36939cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36939cztM0_level2_quad_clean.evt
Size (bytes)511,640,64092,813,760
Size487.9 MB 88.5 MB
Events in quadrant A2,953,394634,138
Events in quadrant B4,069,970614,590
Events in quadrant C3,123,538617,978
Events in quadrant D4,967,044550,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123873
B0156642
C0126772
D0185542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5620200.355872%
B56204698.345196%
C56201172.081851%
D562066011.743772%

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 9176 5622 3 3 0.03% 0.05%
B 9176 5621 370 370 4.03% 6.58%
C 9176 5622 88 88 0.96% 1.57%
D 9176 5622 598 598 6.52% 10.64%

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 250040 1819.93 683 673 137.0
A 13 248 17846 125.33 683 673 137.0
A 13 6 16753 117.36 683 673 137.0
B 5 184 534593 4318.58 645 631 123.6
B 5 172 406113 3279.46 645 631 123.6
B 0 229 327551 2644.06 645 631 123.6
C 0 10 344343 2297.25 645 653 149.6
C 15 214 241612 1610.59 645 653 149.6
C 3 233 9953 62.16 645 653 149.6
D 12 17 607929 3989.05 621 604 152.2
D 10 253 430365 2822.77 621 604 152.2
D 12 233 385596 2528.71 621 604 152.2

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