ASTROSAT CZTI

Data Quality Report

Orbit 11481

Creation date: 2024-06-27T16:13:34.617750
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_021T04_9000001682_11481cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11481cztM0_level2_quad_clean.evt
Size (bytes)201,807,36037,402,560
Size192.5 MB 35.7 MB
Events in quadrant A2,177,137235,207
Events in quadrant B1,423,946242,274
Events in quadrant C943,844265,961
Events in quadrant D1,430,205244,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078751
B055721
C041001
D055671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198227013.622603%
B19821175.903128%
C198230.151362%
D1982914.591322%

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 1983 1983 159 159 8.02% 8.02%
B 1983 1983 75 75 3.78% 3.78%
C 1983 1983 2 2 0.10% 0.10%
D 1983 1983 58 58 2.92% 2.92%

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 5 1266713 26257.84 226 221 48.2
A 9 143 12842 261.67 226 221 48.2
A 1 162 5897 117.68 226 221 48.2
B 4 81 183951 4110.23 228 223 44.7
B 15 204 116718 2606.14 228 223 44.7
B 4 239 113515 2534.49 228 223 44.7
C 3 9 11392 194.45 237 239 57.4
C 8 128 3757 61.34 237 239 57.4
C 8 112 2293 35.81 237 239 57.4
D 1 52 351683 6099.93 233 227 57.6
D 13 172 49886 861.89 233 227 57.6
D 2 120 43502 751.09 233 227 57.6

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