ASTROSAT CZTI

Data Quality Report

Orbit 08461

Creation date: 2024-06-27T15:33:00.519374
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_074T01_9000001192_08461cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08461cztM0_level2_quad_clean.evt
Size (bytes)1,194,572,160230,624,640
Size1.1 GB 219.9 MB
Events in quadrant A8,616,7531,410,807
Events in quadrant B9,012,4701,424,856
Events in quadrant C8,678,7191,468,766
Events in quadrant D8,627,3591,416,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03836
B038412
C038410
D03837

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393331003
B0403021195
C039608976
D0392941035

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183382621.428727%
B183353241.767112%
C183682501.361063%
D183291871.020241%

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 20929 18732 55 55 0.26% 0.29%
B 20929 18718 28 28 0.13% 0.15%
C 20929 18721 43 43 0.21% 0.23%
D 20929 18707 17 17 0.08% 0.09%

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 13 251 368442 839.69 2145 2097 436.3
A 0 226 19808 40.59 2145 2097 436.3
A 12 194 18940 38.61 2145 2097 436.3
B 0 214 206125 496.16 2152 2096 411.2
B 11 51 177402 426.31 2152 2096 411.2
B 4 81 167752 402.85 2152 2096 411.2
C 9 54 435794 886.25 2110 2118 489.3
C 13 61 15837 28.04 2110 2118 489.3
C 8 222 12336 20.88 2110 2118 489.3
D 2 152 299402 593.43 2099 2054 501.1
D 1 52 100289 196.05 2099 2054 501.1
D 2 14 96038 187.57 2099 2054 501.1

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