ASTROSAT CZTI

Data Quality Report

Orbit 36323

Creation date: 2022-06-17T08:30:22.070757
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_089T02_9000005188_36323cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36323cztM0_level2_quad_clean.evt
Size (bytes)439,038,72047,934,720
Size418.7 MB 45.7 MB
Events in quadrant A2,153,334302,519
Events in quadrant B5,648,562257,761
Events in quadrant C2,312,538292,841
Events in quadrant D2,873,598278,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093121
B0199121
C096811
D0116741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A453760.132246%
B4537123827.286753%
C4537461.013886%
D45371002.204100%

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 6600 4538 0 0 0.00% 0.00%
B 6600 4538 1058 1058 16.03% 23.31%
C 6600 4538 46 46 0.70% 1.01%
D 6600 4538 102 102 1.55% 2.25%

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 10 83 119628 1124.51 523 513 105.9
A 13 254 6189 53.58 523 513 105.9
A 12 189 5998 51.78 523 513 105.9
B 5 172 1969786 22001.59 458 447 89.5
B 4 171 1408556 15731.49 458 447 89.5
B 5 236 310586 3464.89 458 447 89.5
C 15 214 187179 1579.52 502 507 118.2
C 0 10 163654 1380.46 502 507 118.2
C 13 61 3394 24.43 502 507 118.2
D 12 6 409868 3339.03 499 486 122.6
D 12 227 149084 1212.01 499 486 122.6
D 13 171 144454 1174.24 499 486 122.6

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