ASTROSAT CZTI

Data Quality Report

Orbit 14671

Creation date: 2024-06-27T16:58:17.493010
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/AS1A04_101T01_9000002170_14671cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14671cztM0_level2_quad_clean.evt
Size (bytes)500,529,60081,158,400
Size477.3 MB 77.4 MB
Events in quadrant A3,505,144494,816
Events in quadrant B3,529,372490,294
Events in quadrant C4,168,260490,565
Events in quadrant D3,468,461482,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150293
B0148592
C0168302
D0151352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7176931.295987%
B71761031.435340%
C7176881.226310%
D7176941.309922%

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 8797 7177 0 0 0.00% 0.00%
B 8797 7177 0 0 0.00% 0.00%
C 8797 7177 1 1 0.01% 0.01%
D 8797 7177 24 24 0.27% 0.33%

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 0 253 73226 402.9 887 869 179.6
A 8 15 16426 86.62 887 869 179.6
A 0 226 7928 39.31 887 869 179.6
B 0 214 29620 168.18 884 860 171.0
B 12 111 20768 116.42 884 860 171.0
B 0 205 19583 109.49 884 860 171.0
C 3 233 806466 4010.25 859 863 200.9
C 12 4 6789 29.5 859 863 200.9
C 13 61 6085 25.99 859 863 200.9
D 10 70 59571 272.05 855 831 215.9
D 1 52 58430 266.77 855 831 215.9
D 2 152 32925 148.64 855 831 215.9

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