ASTROSAT CZTI

Data Quality Report

Orbit 17932

Creation date: 2024-06-27T17:42:46.003804
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/AS1T03_025T01_9000002670_17932cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17932cztM0_level2_quad_clean.evt
Size (bytes)473,532,480107,573,760
Size451.6 MB 102.6 MB
Events in quadrant A3,194,326717,852
Events in quadrant B3,429,146730,366
Events in quadrant C3,318,049693,952
Events in quadrant D3,973,768678,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137752
B0144833
C0140162
D0161382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267771.228658%
B62661131.803383%
C62661262.010852%
D62661562.489627%

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 7507 6267 4 4 0.05% 0.06%
B 7506 6267 25 25 0.33% 0.40%
C 7506 6266 5 5 0.07% 0.08%
D 7506 6267 94 94 1.25% 1.50%

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 4 2 32236 192.93 821 804 162.9
A 0 226 7333 40.08 821 804 162.9
A 12 194 6078 32.37 821 804 162.9
B 7 220 67001 437.04 819 800 151.5
B 4 48 43486 281.8 819 800 151.5
B 0 197 32662 210.34 819 800 151.5
C 14 238 124107 674.48 795 800 182.8
C 3 233 41301 221.54 795 800 182.8
C 9 54 21550 113.5 795 800 182.8
D 7 238 645445 3375.88 802 779 191.0
D 15 0 85516 443.74 802 779 191.0
D 10 70 42050 216.12 802 779 191.0

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