ASTROSAT CZTI

Data Quality Report

Orbit 27221

Creation date: 2024-06-27T19:37:51.912007
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/AS1T03_243T01_9000003918_27221cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27221cztM0_level2_quad_clean.evt
Size (bytes)1,613,986,560210,867,840
Size1.5 GB 201.1 MB
Events in quadrant A9,157,2881,377,635
Events in quadrant B9,113,4781,406,644
Events in quadrant C8,946,1851,345,805
Events in quadrant D20,397,124963,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390430
B0386460
C0384280
D0733010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187272021.078656%
B187282251.201410%
C187282721.452371%
D18728536228.630927%

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 20892 18732 2 2 0.01% 0.01%
B 20893 18733 1 1 0.00% 0.01%
C 20893 18733 3 3 0.01% 0.02%
D 20893 18726 3640 3640 17.42% 19.44%

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 13 141708 302.65 2295 2247 460.8
A 15 174 78011 164.42 2295 2247 460.8
A 14 235 58630 122.36 2295 2247 460.8
B 12 111 55264 119.9 2290 2229 442.3
B 11 111 49732 107.4 2290 2229 442.3
B 14 111 44999 96.7 2290 2229 442.3
C 14 238 351062 676.92 2198 2212 515.3
C 15 208 30096 54.11 2198 2212 515.3
C 13 61 14872 24.57 2198 2212 515.3
D 1 52 12701459 29019.26 1830 1789 437.6
D 2 250 323179 734.39 1830 1789 437.6
D 7 38 165945 375.1 1830 1789 437.6

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