ASTROSAT CZTI

Data Quality Report

Orbit 51321

Creation date: 2025-03-25T04:03:55.089819
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/AS1C07_001T03_9000006456_51321cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51321cztM0_level2_quad_clean.evt
Size (bytes)794,969,28087,917,760
Size758.1 MB 83.8 MB
Events in quadrant A6,802,337600,894
Events in quadrant B4,637,880686,307
Events in quadrant C10,792,700384,013
Events in quadrant D6,697,831542,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247702
B0182742
C0364962
D0244022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64305017.791602%
B64302714.214619%
C6430286944.618974%
D643069410.793157%

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 7580 6431 386 386 5.09% 6.00%
B 7580 6431 112 112 1.48% 1.74%
C 7580 6430 2708 2708 35.73% 42.12%
D 7580 6431 661 661 8.72% 10.28%

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 12 3 2538992 15153.31 672 656 167.5
A 12 250 389860 2323.46 672 656 167.5
A 7 235 333003 1984.04 672 656 167.5
B 10 254 393154 2697.51 688 665 145.5
B 5 172 263861 1808.9 688 665 145.5
B 5 185 262691 1800.86 688 665 145.5
C 15 148 3608474 24905.82 529 525 144.9
C 4 12 3052199 21065.83 529 525 144.9
C 3 233 715815 4937.67 529 525 144.9
D 2 216 885360 4951.72 644 620 178.7
D 7 80 706542 3950.91 644 620 178.7
D 11 176 659558 3687.95 644 620 178.7

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