ASTROSAT CZTI

Data Quality Report

Orbit 08346

Creation date: 2024-06-27T15:31:23.503137
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/AS1G07_029T01_9000001158_08346cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08346cztM0_level2_quad_clean.evt
Size (bytes)1,500,212,160288,740,160
Size1.4 GB 275.4 MB
Events in quadrant A10,785,3291,788,134
Events in quadrant B11,278,1181,806,886
Events in quadrant C10,600,8571,783,804
Events in quadrant D11,157,0061,726,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488535
B0498074
C0485864
D0506644

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238401520.637584%
B238402080.872483%
C238401050.440436%
D238402761.157718%

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 26655 23844 5 5 0.02% 0.02%
B 26655 23844 29 29 0.11% 0.12%
C 26655 23844 16 16 0.06% 0.07%
D 26655 23844 174 174 0.65% 0.73%

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 15 239 126919 222.92 2762 2702 557.2
A 15 236 30121 49.21 2762 2702 557.2
A 0 226 25588 41.07 2762 2702 557.2
B 4 81 189875 353.4 2772 2702 529.6
B 0 214 111359 205.16 2772 2702 529.6
B 4 80 105601 194.28 2772 2702 529.6
C 9 54 103136 160.99 2692 2706 623.8
C 13 61 20489 28.51 2692 2706 623.8
C 3 202 6574 6.2 2692 2706 623.8
D 2 14 808598 1258.0 2668 2602 640.7
D 7 71 90185 136.7 2668 2602 640.7
D 2 234 83729 126.62 2668 2602 640.7

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