ASTROSAT CZTI

Data Quality Report

Orbit 22723

Creation date: 2024-06-27T18:44:50.259140
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/AS1A08_007T01_9000003362_22723cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22723cztM0_level2_quad_clean.evt
Size (bytes)415,028,16094,294,080
Size395.8 MB 89.9 MB
Events in quadrant A2,929,550620,898
Events in quadrant B3,043,824631,294
Events in quadrant C3,093,316606,402
Events in quadrant D3,110,316593,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122061
B0125531
C0127141
D0128151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5765230.398959%
B5764370.641915%
C5764881.526718%
D5765520.901995%

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 7010 5766 0 0 0.00% 0.00%
B 7009 5765 8 8 0.11% 0.14%
C 7009 5765 16 16 0.23% 0.28%
D 7010 5766 16 16 0.23% 0.28%

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 13 254 9860 60.83 756 742 149.9
A 0 23 7290 43.68 756 742 149.9
A 0 226 7138 42.67 756 742 149.9
B 0 228 52958 377.76 747 729 138.3
B 0 190 41176 292.54 747 729 138.3
B 0 245 16598 114.78 747 729 138.3
C 14 238 116197 679.36 734 739 170.0
C 9 54 66864 389.08 734 739 170.0
C 10 22 27624 158.19 734 739 170.0
D 1 52 123360 681.96 746 726 179.8
D 12 233 46165 252.68 746 726 179.8
D 7 238 44258 242.08 746 726 179.8

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