ASTROSAT CZTI

Data Quality Report

Orbit 15679

Creation date: 2024-06-27T17:12:01.276538
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/AS1T02_084T01_9000002318_15679cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15679cztM0_level2_quad_clean.evt
Size (bytes)486,475,20098,150,400
Size463.9 MB 93.6 MB
Events in quadrant A3,414,120622,525
Events in quadrant B3,720,307628,558
Events in quadrant C3,459,453617,331
Events in quadrant D3,650,966604,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148333
B0155212
C0148462
D0157532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71861431.989981%
B71861532.129140%
C71861672.323963%
D71861682.337879%

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 7677 7188 2 2 0.03% 0.03%
B 7677 7188 14 14 0.18% 0.19%
C 7677 7188 0 0 0.00% 0.00%
D 7677 7188 53 53 0.69% 0.74%

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 13 248 31418 170.85 880 859 178.9
A 0 226 7732 38.42 880 859 178.9
A 12 194 6600 32.1 880 859 178.9
B 4 173 148871 884.75 875 854 167.3
B 0 189 30797 178.98 875 854 167.3
B 3 64 28862 167.41 875 854 167.3
C 14 238 129130 653.56 845 851 196.3
C 3 233 25892 127.58 845 851 196.3
C 13 61 5971 26.09 845 851 196.3
D 1 52 139554 671.54 856 832 206.6
D 12 110 114377 549.66 856 832 206.6
D 10 70 111473 535.6 856 832 206.6

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