ASTROSAT CZTI

Data Quality Report

Orbit 20542

Creation date: 2024-06-27T18:16:36.494364
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_022T08_9000003036_20542cztM0_level2.evt modeM0/AS1A05_022T08_9000003036_20542cztM0_level2_quad_clean.evt
Size (bytes)490,034,88085,484,160
Size467.3 MB 81.5 MB
Events in quadrant A3,430,976542,224
Events in quadrant B3,629,121546,637
Events in quadrant C3,521,484514,795
Events in quadrant D3,786,303499,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145842
B0151842
C0148403
D0161192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6956360.517539%
B6957690.991807%
C6956540.776308%
D69561031.480736%

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 9096 6958 0 0 0.00% 0.00%
B 9097 6959 11 11 0.12% 0.16%
C 9096 6958 0 0 0.00% 0.00%
D 9096 6958 78 78 0.86% 1.12%

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 14 111 58799 325.5 871 854 178.0
A 8 205 8851 44.92 871 854 178.0
A 15 174 7585 37.81 871 854 178.0
B 7 220 108107 642.67 867 845 166.9
B 0 197 55770 329.09 867 845 166.9
B 0 189 24092 139.29 867 845 166.9
C 14 238 131139 672.09 825 831 193.9
C 8 208 107889 552.17 825 831 193.9
C 9 221 48896 247.91 825 831 193.9
D 12 238 177872 866.52 831 806 204.3
D 13 153 144940 705.36 831 806 204.3
D 1 52 124593 605.78 831 806 204.3

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