ASTROSAT CZTI

Data Quality Report

Orbit 08440

Creation date: 2024-06-27T15:32:46.030079
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/AS1A03_074T01_9000001192_08440cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08440cztM0_level2_quad_clean.evt
Size (bytes)461,410,56080,622,720
Size440.0 MB 76.9 MB
Events in quadrant A3,292,616487,944
Events in quadrant B3,529,740494,969
Events in quadrant C3,245,849503,299
Events in quadrant D3,446,487484,309

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140062
B0145791
C0140521
D0146591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67521151.703199%
B67521251.851303%
C6752791.170024%
D67521181.747630%

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 7772 6752 0 0 0.00% 0.00%
B 7772 6753 4 4 0.05% 0.06%
C 7772 6753 2 2 0.03% 0.03%
D 7772 6753 19 19 0.24% 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 0 128 20337 113.57 842 824 171.8
A 13 251 18897 105.19 842 824 171.8
A 4 2 10836 58.27 842 824 171.8
B 0 214 91278 568.02 839 818 159.3
B 4 81 81614 507.34 839 818 159.3
B 11 51 49586 306.23 839 818 159.3
C 13 255 46224 239.97 818 823 189.2
C 13 61 13817 68.68 818 823 189.2
C 14 67 2772 10.3 818 823 189.2
D 2 152 117309 579.46 821 798 201.1
D 7 71 107721 531.78 821 798 201.1
D 1 52 38859 189.29 821 798 201.1

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