ASTROSAT CZTI

Data Quality Report

Orbit 20170905_A03_084T01_9000001514_level2

Creation date: 2025-11-16T23:29:21.892585
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/AS1A03_084T01_9000001514cztM0_level2.fits modeM0/AS1A03_084T01_9000001514cztM0_level2_quad_clean.evt
Size (bytes)186,393,600156,389,760
Size177.8 MB 149.1 MB
Events in quadrant A998,724881,203
Events in quadrant B1,102,764864,742
Events in quadrant C1,141,198838,830
Events in quadrant D1,031,476782,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04150
B04090
C04150
D04170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608500
B0454080
C0407090
D0471550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19711347817.644970%
B194676503.338984%
C197092801.420671%
D205813491.695739%

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 24982 19160 0 0 0.00% 0.00%
B 24982 19519 0 0 0.00% 0.00%
C 24982 19758 0 0 0.00% 0.00%
D 24982 20593 0 0 0.00% 0.00%

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 0 29 924 10.21 259 243 66.7
A 7 110 814 8.56 259 243 66.7
A 0 30 776 7.99 259 243 66.7
B 2 9 919 10.59 290 277 60.6
B 12 226 754 7.87 290 277 60.6
B 5 232 749 7.79 290 277 60.6
C 1 81 842 7.0 301 280 80.3
C 1 80 828 6.82 301 280 80.3
C 3 158 786 6.3 301 280 80.3
D 6 231 750 6.03 294 267 80.1
D 7 5 728 5.76 294 267 80.1
D 3 14 727 5.75 294 267 80.1

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