ASTROSAT CZTI

Data Quality Report

Orbit 18687

Creation date: 2024-06-27T17:53:24.842505
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/AS1A05_072T04_9000002794_18687cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18687cztM0_level2_quad_clean.evt
Size (bytes)491,823,36071,424,000
Size469.0 MB 68.1 MB
Events in quadrant A3,398,779433,423
Events in quadrant B3,734,965438,888
Events in quadrant C3,696,838427,296
Events in quadrant D3,637,374424,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141083
B0151232
C0151092
D0148692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62891131.796788%
B62892053.259660%
C62891943.084751%
D62891722.734934%

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 7604 6290 0 0 0.00% 0.00%
B 7604 6290 59 59 0.78% 0.94%
C 7604 6290 20 20 0.26% 0.32%
D 7604 6290 62 62 0.82% 0.99%

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 6 16 12368 66.1 876 861 174.1
A 13 254 10620 56.06 876 861 174.1
A 11 29 8884 46.09 876 861 174.1
B 7 220 224386 1385.33 862 844 161.4
B 4 171 73149 448.09 862 844 161.4
B 3 64 20065 119.12 862 844 161.4
C 9 54 205511 1062.48 841 850 192.6
C 14 238 134256 692.57 841 850 192.6
C 3 233 35013 177.35 841 850 192.6
D 7 238 312049 1492.26 856 832 208.6
D 1 52 42467 199.64 856 832 208.6
D 2 234 27633 128.51 856 832 208.6

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