ASTROSAT CZTI

Data Quality Report

Orbit 46440

Creation date: 2024-06-27T23:23:14.517402
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_062T01_9000006208_46440cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46440cztM0_level2_quad_clean.evt
Size (bytes)469,002,240112,512,960
Size447.3 MB 107.3 MB
Events in quadrant A6,005,357734,905
Events in quadrant B3,324,819762,715
Events in quadrant C3,369,152741,527
Events in quadrant D4,118,672680,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224432
B0148122
C0148812
D0172532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69921622.316934%
B6992991.415904%
C6992821.172769%
D69921331.902174%

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 7762 6993 12 12 0.15% 0.17%
B 7762 6993 14 14 0.18% 0.20%
C 7762 6993 35 35 0.45% 0.50%
D 7762 6993 104 104 1.34% 1.49%

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 2939977 18181.23 777 761 161.7
A 7 3 47711 290.42 777 761 161.7
A 13 254 11199 64.57 777 761 161.7
B 0 189 208740 1346.6 775 749 154.5
B 0 190 24051 150.86 775 749 154.5
B 12 111 20781 129.69 775 749 154.5
C 14 254 167141 903.31 774 781 184.2
C 9 54 96327 518.8 774 781 184.2
C 3 233 54719 292.87 774 781 184.2
D 13 249 661752 3430.86 765 740 192.7
D 14 34 265106 1372.14 765 740 192.7
D 1 52 228299 1181.1 765 740 192.7

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