ASTROSAT CZTI

Data Quality Report

Orbit 27384

Creation date: 2024-06-27T19:39:33.363579
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/AS1T03_249T01_9000003934_27384cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27384cztM0_level2_quad_clean.evt
Size (bytes)2,855,963,520447,816,960
Size2.7 GB 427.1 MB
Events in quadrant A15,712,0542,964,558
Events in quadrant B15,991,2662,974,659
Events in quadrant C22,976,3922,637,257
Events in quadrant D29,583,7022,712,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680080
B0688380
C0898430
D01108470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330891390.420079%
B330882540.767650%
C3309032739.891206%
D33090392011.846479%

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 38069 33095 2 2 0.01% 0.01%
B 38069 33095 7 7 0.02% 0.02%
C 38070 33094 2506 2506 6.58% 7.57%
D 38070 33094 3147 3147 8.27% 9.51%

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 13 254 53705 61.46 4054 3973 809.2
A 12 96 48612 55.16 4054 3973 809.2
A 3 137 37811 41.82 4054 3973 809.2
B 15 32 118400 151.05 4012 3911 758.0
B 12 111 93870 118.69 4012 3911 758.0
B 11 111 84027 105.7 4012 3911 758.0
C 2 16 7879820 9081.32 3685 3704 867.3
C 14 238 588821 674.65 3685 3704 867.3
C 15 208 141672 159.08 3685 3704 867.3
D 1 52 13256294 15308.78 3695 3619 865.7
D 12 227 1066606 1227.91 3695 3619 865.7
D 2 250 885847 1019.1 3695 3619 865.7

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