ASTROSAT CZTI

Data Quality Report

Orbit 39041

Creation date: 2024-06-27T21:59:38.655763
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/AS1A12_077T06_9000005430_39041cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39041cztM0_level2_quad_clean.evt
Size (bytes)412,280,64099,613,440
Size393.2 MB 95.0 MB
Events in quadrant A6,715,400604,843
Events in quadrant B2,627,188725,609
Events in quadrant C2,739,848686,798
Events in quadrant D2,774,528635,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235673
B0108112
C0111352
D0115622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5200102719.750000%
B5200140.269231%
C520080.153846%
D5200280.538462%

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 7293 5201 825 825 11.31% 15.86%
B 7293 5201 6 6 0.08% 0.12%
C 7293 5201 3 3 0.04% 0.06%
D 7293 5201 21 21 0.29% 0.40%

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 15 222 3919776 32335.82 606 597 121.2
A 10 83 378931 3121.51 606 597 121.2
A 12 16 23967 192.82 606 597 121.2
B 0 190 50065 408.04 647 631 121.1
B 15 85 18955 151.25 647 631 121.1
B 0 230 15806 125.26 647 631 121.1
C 15 214 218362 1474.23 640 645 147.7
C 0 10 10695 68.05 640 645 147.7
C 4 0 4621 26.92 640 645 147.7
D 1 47 129332 833.22 640 624 154.5
D 2 249 63717 408.45 640 624 154.5
D 2 250 45703 291.83 640 624 154.5

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