ASTROSAT CZTI

Data Quality Report

Orbit 27056

Creation date: 2024-06-27T19:35:59.461609
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_120T02_9000003904_27056cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27056cztM0_level2_quad_clean.evt
Size (bytes)716,088,960107,043,840
Size682.9 MB 102.1 MB
Events in quadrant A6,288,084669,330
Events in quadrant B7,779,051716,638
Events in quadrant C3,471,369704,070
Events in quadrant D3,687,377676,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231910
B0276370
C0144080
D0155360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A681280311.788021%
B6812205030.093952%
C68121161.702877%
D68111141.673763%

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 7651 6811 649 649 8.48% 9.53%
B 7651 6811 1508 1508 19.71% 22.14%
C 7651 6811 0 0 0.00% 0.00%
D 7650 6810 46 46 0.60% 0.68%

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 14 235 3026883 17919.25 845 830 168.9
A 13 254 11202 61.42 845 830 168.9
A 3 137 7584 39.99 845 830 168.9
B 0 189 4564376 30343.94 786 770 150.4
B 10 246 84079 553.93 786 770 150.4
B 0 182 25418 163.89 786 770 150.4
C 14 238 137488 673.92 854 861 202.7
C 3 9 6114 25.91 854 861 202.7
C 13 61 5790 24.31 854 861 202.7
D 1 52 191747 938.81 846 826 203.4
D 2 250 185997 910.54 846 826 203.4
D 7 38 53296 258.01 846 826 203.4

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