ASTROSAT CZTI

Data Quality Report

Orbit 35311

Creation date: 2022-04-10T00:59:19.629732
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/AS1T05_023T01_9000005058_35311cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35311cztM0_level2_quad_clean.evt
Size (bytes)656,078,40085,944,960
Size625.7 MB 82.0 MB
Events in quadrant A3,362,970581,904
Events in quadrant B7,305,183490,666
Events in quadrant C4,213,638565,478
Events in quadrant D4,572,830535,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140373
B0259262
C0165022
D0176482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133240.391326%
B6133170027.718898%
C61332193.570846%
D61333235.266591%

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 8760 6135 6 6 0.07% 0.10%
B 8760 6135 1310 1310 14.95% 21.35%
C 8760 6135 204 204 2.33% 3.33%
D 8760 6135 311 311 3.55% 5.07%

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 15 169 499813 3548.67 702 688 140.7
A 10 83 104057 734.93 702 688 140.7
A 13 6 18947 129.82 702 688 140.7
B 5 236 2671482 22531.28 614 598 118.5
B 5 172 2138916 18038.61 614 598 118.5
B 5 200 63581 531.32 614 598 118.5
C 4 254 620056 3952.56 678 683 156.7
C 0 10 397539 2532.56 678 683 156.7
C 15 214 252500 1606.98 678 683 156.7
D 8 195 743529 4554.94 670 651 163.1
D 13 249 627585 3844.03 670 651 163.1
D 12 233 210204 1284.87 670 651 163.1

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