ASTROSAT CZTI

Data Quality Report

Orbit 13727

Creation date: 2024-06-27T16:45:14.067633
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/AS1G08_039T01_9000002036_13727cztM0_level2.evt modeM0/AS1G08_039T01_9000002036_13727cztM0_level2_quad_clean.evt
Size (bytes)507,738,24081,158,400
Size484.2 MB 77.4 MB
Events in quadrant A3,531,172493,252
Events in quadrant B3,995,414522,116
Events in quadrant C3,604,234476,278
Events in quadrant D3,745,682452,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152973
B0164082
C0152142
D0158392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73661271.724138%
B73661942.633723%
C7366921.248982%
D73661051.425468%

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 7642 7369 8 8 0.10% 0.11%
B 7642 7369 45 45 0.59% 0.61%
C 7642 7369 0 0 0.00% 0.00%
D 7642 7369 13 13 0.17% 0.18%

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 9 143 43601 228.16 903 883 187.2
A 1 162 10228 49.91 903 883 187.2
A 0 226 8174 38.94 903 883 187.2
B 4 48 176208 996.6 909 889 175.9
B 0 219 63835 357.81 909 889 175.9
B 4 173 55893 312.67 909 889 175.9
C 3 233 185362 905.85 875 880 203.7
C 13 61 6326 26.74 875 880 203.7
C 8 128 4154 16.08 875 880 203.7
D 8 195 190538 890.86 872 846 212.9
D 1 52 93979 437.38 872 846 212.9
D 10 157 55916 258.63 872 846 212.9

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