ASTROSAT CZTI

Data Quality Report

Orbit 45261

Creation date: 2024-06-27T23:11:40.658588
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/AS1A13_024T03_9000006064_45261cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45261cztM0_level2_quad_clean.evt
Size (bytes)535,587,840119,940,480
Size510.8 MB 114.4 MB
Events in quadrant A5,874,601801,091
Events in quadrant B3,682,652827,812
Events in quadrant C3,507,206788,343
Events in quadrant D6,185,982697,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226090
B0160590
C0158851
D0236310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7421590.795041%
B7421771.037596%
C7420270.363881%
D74213614.864574%

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 7421 7421 21 21 0.28% 0.28%
B 7421 7421 35 35 0.47% 0.47%
C 7420 7420 16 16 0.22% 0.22%
D 7421 7421 344 344 4.64% 4.64%

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 2549343 14684.38 828 809 173.6
A 13 248 75340 429.44 828 809 173.6
A 0 243 18671 102.92 828 809 173.6
B 12 3 144622 889.06 824 798 161.8
B 12 16 104573 641.49 824 798 161.8
B 5 32 43157 261.84 824 798 161.8
C 14 254 292925 1514.07 810 813 192.9
C 2 14 34193 173.01 810 813 192.9
C 3 233 16351 80.54 810 813 192.9
D 13 249 1155721 5800.03 792 766 199.1
D 11 241 1002659 5031.38 792 766 199.1
D 5 235 249595 1249.59 792 766 199.1

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