ASTROSAT CZTI

Data Quality Report

Orbit 06908

Creation date: 2024-06-27T15:12:57.748487
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/AS1A02_005T01_9000000948_06908cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06908cztM0_level2_quad_clean.evt
Size (bytes)496,529,28094,435,200
Size473.5 MB 90.1 MB
Events in quadrant A3,458,258587,482
Events in quadrant B3,679,789594,795
Events in quadrant C3,367,568591,176
Events in quadrant D4,027,030569,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154272
B0161001
C0152651
D0171421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7434360.484262%
B7434891.197202%
C7434480.645682%
D7434881.183750%

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 7649 7436 0 0 0.00% 0.00%
B 7649 7436 9 9 0.12% 0.12%
C 7649 7436 0 0 0.00% 0.00%
D 7649 7436 46 46 0.60% 0.62%

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 8 15 58025 321.52 869 849 177.8
A 4 2 23663 128.29 869 849 177.8
A 0 23 13185 69.37 869 849 177.8
B 4 173 74973 443.37 877 857 167.2
B 4 81 73330 433.54 877 857 167.2
B 0 228 35804 209.06 877 857 167.2
C 9 247 28788 141.92 847 851 196.9
C 8 128 13031 61.87 847 851 196.9
C 8 112 7196 32.23 847 851 196.9
D 2 216 340160 1631.48 846 819 208.0
D 2 136 139449 666.5 846 819 208.0
D 1 20 94862 452.14 846 819 208.0

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