ASTROSAT CZTI

Data Quality Report

Orbit 46687

Creation date: 2024-06-27T23:26:28.620397
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_092T20_9000006254_46687cztM0_level2.fits modeM0/AS1A13_092T20_9000006254_46687cztM0_level2_quad_clean.evt
Size (bytes)497,548,800105,436,800
Size474.5 MB 100.6 MB
Events in quadrant A6,121,769728,702
Events in quadrant B4,296,662699,317
Events in quadrant C2,864,501681,212
Events in quadrant D4,655,368651,419

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224491
B0171321
C0132471
D0181891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61841822.943079%
B61852914.704931%
C6185400.646726%
D61851722.780922%

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 7094 6185 30 30 0.42% 0.49%
B 7094 6185 176 176 2.48% 2.85%
C 7095 6186 22 22 0.31% 0.36%
D 7095 6186 126 126 1.78% 2.04%

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 3308438 22753.97 694 680 145.4
A 15 254 60750 413.22 694 680 145.4
A 15 235 25377 169.89 694 680 145.4
B 10 128 1226918 9164.62 673 651 133.8
B 0 198 152316 1133.48 673 651 133.8
B 0 190 89841 666.57 673 651 133.8
C 12 2 144933 908.3 669 673 158.8
C 5 250 48928 303.83 669 673 158.8
C 1 241 22306 136.21 669 673 158.8
D 1 52 1258996 7175.09 680 658 175.4
D 8 176 294667 1676.45 680 658 175.4
D 11 192 140939 799.89 680 658 175.4

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