ASTROSAT CZTI

Data Quality Report

Orbit 19510

Creation date: 2024-06-27T18:03:38.677263
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/AS1A05_175T01_9000002894_19510cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19510cztM0_level2_quad_clean.evt
Size (bytes)457,390,08082,362,240
Size436.2 MB 78.5 MB
Events in quadrant A3,290,917528,195
Events in quadrant B3,323,251534,058
Events in quadrant C3,306,613498,431
Events in quadrant D3,500,898491,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135532
B0135962
C0134772
D0144462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6339761.198927%
B6339791.246253%
C6339901.419782%
D6339851.340906%

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 7554 6339 1 1 0.01% 0.02%
B 7554 6339 0 0 0.00% 0.00%
C 7554 6339 0 0 0.00% 0.00%
D 7554 6340 38 38 0.50% 0.60%

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 4 2 11396 61.95 852 837 170.4
A 0 226 7438 38.73 852 837 170.4
A 13 254 7046 36.43 852 837 170.4
B 12 111 18889 114.25 845 827 158.1
B 11 111 16762 100.8 845 827 158.1
B 14 111 15040 89.91 845 827 158.1
C 14 238 125040 673.36 798 804 184.5
C 3 233 35634 188.78 798 804 184.5
C 9 221 34052 180.2 798 804 184.5
D 12 218 231587 1180.32 813 789 195.5
D 7 238 87358 442.72 813 789 195.5
D 1 52 60802 306.91 813 789 195.5

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