ASTROSAT CZTI

Data Quality Report

Orbit 26042

Creation date: 2024-06-27T19:24:10.568101
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/AS1A09_033T02_9000003762_26042cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26042cztM0_level2_quad_clean.evt
Size (bytes)532,149,12075,332,160
Size507.5 MB 71.8 MB
Events in quadrant A3,807,174462,292
Events in quadrant B3,869,401464,164
Events in quadrant C3,512,011440,987
Events in quadrant D4,472,833445,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151780
B0153830
C0141890
D0175120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67001812.701493%
B67001922.865672%
C67001602.388060%
D67001942.895522%

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 7780 6700 50 50 0.64% 0.75%
B 7780 6700 46 46 0.59% 0.69%
C 7780 6700 0 0 0.00% 0.00%
D 7780 6700 115 115 1.48% 1.72%

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 0 13 295022 1620.54 911 894 181.5
A 13 254 9549 47.69 911 894 181.5
A 3 137 8079 39.59 911 894 181.5
B 10 245 295814 1740.97 889 866 169.4
B 0 190 37332 215.25 889 866 169.4
B 0 229 27347 156.31 889 866 169.4
C 14 238 140910 704.92 858 866 198.7
C 3 233 24393 118.42 858 866 198.7
C 13 61 5861 25.14 858 866 198.7
D 1 52 1064769 4979.67 880 859 213.7
D 7 223 47614 218.84 880 859 213.7
D 2 234 23315 105.11 880 859 213.7

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