ASTROSAT CZTI

Data Quality Report

Orbit 31426

Creation date: 2024-06-27T20:28:10.524156
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/AS1A10_094T30_9000004566_31426cztM0_level2.evt modeM0/AS1A10_094T30_9000004566_31426cztM0_level2_quad_clean.evt
Size (bytes)504,020,16077,901,120
Size480.7 MB 74.3 MB
Events in quadrant A2,039,101612,380
Events in quadrant B7,771,464263,688
Events in quadrant C2,147,795610,934
Events in quadrant D3,034,264588,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09145787
B0270831322
C09593851
D0135311371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0906
B0917
C0906
D0917

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3988180.451354%
B3989293573.577338%
C39861052.634220%
D39861313.286503%

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 5367 3997 0 0 0.00% 0.00%
B 5349 3993 2410 2410 45.06% 60.36%
C 5344 3990 3 3 0.06% 0.08%
D 5352 3993 95 95 1.78% 2.38%

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 7488 66.56 528 518 104.7
A 3 137 4972 42.53 528 518 104.7
A 0 226 4414 37.2 528 518 104.7
B 12 1 6273755 136101.14 242 236 46.1
B 6 159 504649 10943.01 242 236 46.1
B 12 2 24149 518.78 242 236 46.1
C 14 238 88862 739.1 514 519 119.5
C 3 233 36005 296.88 514 519 119.5
C 2 114 9367 74.02 514 519 119.5
D 8 195 469728 3847.16 514 501 122.0
D 12 218 320070 2620.12 514 501 122.0
D 5 233 137126 1120.18 514 501 122.0

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