ASTROSAT CZTI

Data Quality Report

Orbit 13507

Creation date: 2024-06-27T16:41:50.623122
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/AS1A04_103T01_9000001988_13507cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13507cztM0_level2_quad_clean.evt
Size (bytes)540,887,04098,023,680
Size515.8 MB 93.5 MB
Events in quadrant A3,560,638619,005
Events in quadrant B3,982,499628,716
Events in quadrant C3,678,590617,359
Events in quadrant D4,657,483589,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154553
B0167012
C0155982
D0191202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73961201.622499%
B73961592.149811%
C7396751.014062%
D73963945.327204%

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 9267 7399 0 0 0.00% 0.00%
B 9267 7398 9 9 0.10% 0.12%
C 9267 7399 0 0 0.00% 0.00%
D 9267 7399 257 257 2.77% 3.47%

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 31432 164.28 913 894 185.9
A 1 162 12323 61.48 913 894 185.9
A 0 226 8009 38.27 913 894 185.9
B 3 64 279235 1601.33 912 891 173.8
B 4 80 49573 280.07 912 891 173.8
B 4 173 31262 174.73 912 891 173.8
C 3 233 189547 923.54 887 894 204.3
C 4 175 24388 115.01 887 894 204.3
C 13 61 6221 26.08 887 894 204.3
D 12 110 818436 3943.18 867 842 207.3
D 11 129 372266 1791.34 867 842 207.3
D 8 195 119489 572.22 867 842 207.3

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