ASTROSAT CZTI

Data Quality Report

Orbit 20220410_A11_088T02_9000005060_level2

Creation date: 2022-04-23T14:45:03.296702
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/AS1A11_088T02_9000005060cztM0_level2_bc.evt modeM0/AS1A11_088T02_9000005060cztM0_level2_quad_clean.evt
Size (bytes)47,171,5203,890,880
Size45.0 MB 3.7 MB
Events in quadrant A315,99512,981
Events in quadrant B355,76313,319
Events in quadrant C407,85412,765
Events in quadrant D283,71012,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022040
B024730
C026680
D020230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A841313.686088%
B841384.518430%
C84110512.485137%
D84130.356718%

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 841 841 13 13 1.55% 1.55%
B 840 840 0 0 0.00% 0.00%
C 840 840 12 12 1.43% 1.43%
D 840 840 1 1 0.12% 0.12%

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 9 143 55605 4315.05 51 50 12.9
A 10 83 33840 2624.52 51 50 12.9
A 8 192 14282 1105.42 51 50 12.9
B 5 236 119707 9929.68 51 50 12.1
B 5 172 22507 1863.58 51 50 12.1
B 4 232 11044 912.33 51 50 12.1
C 0 10 185886 15283.01 46 45 12.2
C 15 214 35385 2906.26 46 45 12.2
C 15 159 3614 293.5 46 45 12.2
D 12 128 28049 2062.91 50 48 13.6
D 2 249 25203 1853.24 50 48 13.6
D 8 195 17851 1311.59 50 48 13.6

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