ASTROSAT CZTI

Data Quality Report

Orbit 39047

Creation date: 2024-06-27T21:59:44.829558
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/AS1A12_077T06_9000005430_39047cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39047cztM0_level2_quad_clean.evt
Size (bytes)722,188,80081,930,240
Size688.7 MB 78.1 MB
Events in quadrant A15,481,31057,468
Events in quadrant B3,123,222707,367
Events in quadrant C3,086,326677,943
Events in quadrant D4,555,153601,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05031142
B0135412
C0132182
D0180682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256582793.142583%
B6261801.277751%
C6261530.846510%
D62614056.468615%

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 8858 6263 5672 5672 64.03% 90.56%
B 8858 6263 59 59 0.67% 0.94%
C 8858 6263 50 50 0.56% 0.80%
D 8858 6263 355 355 4.01% 5.67%

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 15 222 13740876 193008.4 349 342 71.2
A 10 83 239621 3361.07 349 342 71.2
A 13 248 96747 1354.17 349 342 71.2
B 0 190 333577 2517.23 682 662 132.3
B 0 230 55383 413.76 682 662 132.3
B 5 172 27372 201.96 682 662 132.3
C 15 214 259695 1667.26 669 673 155.4
C 14 254 169658 1087.71 669 673 155.4
C 15 208 27462 172.43 669 673 155.4
D 12 227 573393 3617.9 651 632 158.3
D 1 47 565954 3570.91 651 632 158.3
D 2 249 461001 2907.97 651 632 158.3

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