ASTROSAT CZTI

Data Quality Report

Orbit 34804

Creation date: 2022-03-06T18:40:31.970532
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_004T01_9000004990_34804cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34804cztM0_level2_quad_clean.evt
Size (bytes)505,765,44094,870,080
Size482.3 MB 90.5 MB
Events in quadrant A3,146,664606,803
Events in quadrant B3,793,538608,453
Events in quadrant C3,557,806617,557
Events in quadrant D4,367,388575,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135723
B0154312
C0144172
D0173212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6662170.255179%
B66621722.581807%
C6662440.660462%
D66621702.551786%

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 9317 6664 3 3 0.03% 0.05%
B 9317 6664 123 123 1.32% 1.85%
C 9317 6664 31 31 0.33% 0.47%
D 9317 6664 123 123 1.32% 1.85%

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 52164 326.91 781 765 157.2
A 15 169 32075 199.14 781 765 157.2
A 13 6 16561 100.47 781 765 157.2
B 5 172 372561 2483.52 771 750 149.7
B 5 255 291664 1943.17 771 750 149.7
B 4 232 48259 317.33 771 750 149.7
C 15 214 306556 1720.47 763 768 177.7
C 0 10 159729 894.37 763 768 177.7
C 14 67 94382 526.71 763 768 177.7
D 8 195 654881 3479.21 756 734 188.0
D 2 250 265113 1406.15 756 734 188.0
D 2 249 167250 885.65 756 734 188.0

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