ASTROSAT CZTI

Data Quality Report

Orbit 20160720_G05_167T02_9000000546_level2

Creation date: 2025-11-03T17:30:56.594223
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/AS1G05_167T02_9000000546cztM0_level2.fits modeM0/AS1G05_167T02_9000000546cztM0_level2_quad_clean.evt
Size (bytes)282,867,840224,256,960
Size269.8 MB 213.9 MB
Events in quadrant A1,714,9761,224,460
Events in quadrant B1,671,0881,255,323
Events in quadrant C1,677,4901,180,085
Events in quadrant D1,451,8601,078,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623420
B0621560
C0643890
D0653180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298522150.720220%
B298512380.797293%
C298522920.978159%
D298542950.988142%

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 35458 29850 0 0 0.00% 0.00%
B 35458 29849 0 0 0.00% 0.00%
C 35459 29851 0 0 0.00% 0.00%
D 35458 29852 0 0 0.00% 0.00%

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 0 29 1672 10.86 445 415 115.7
A 7 110 1420 8.69 445 415 115.7
A 9 19 1296 7.61 445 415 115.7
B 2 9 1465 11.34 440 417 92.4
B 5 128 1187 8.33 440 417 92.4
B 12 226 1187 8.33 440 417 92.4
C 1 80 1199 6.53 443 410 120.8
C 9 188 1165 6.25 443 410 120.8
C 12 241 1160 6.21 443 410 120.8
D 11 82 1208 7.54 412 375 110.5
D 1 19 1083 6.41 412 375 110.5
D 7 5 1067 6.26 412 375 110.5

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