ASTROSAT CZTI

Data Quality Report

Orbit 20231107_A13_087T01_9000005908_level2

Creation date: 2023-11-11T11:00:31.912561
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/AS1A13_087T01_9000005908cztM0_level2.fits modeM0/AS1A13_087T01_9000005908cztM0_level2_quad_clean.evt
Size (bytes)977,106,240899,288,640
Size931.8 MB 857.6 MB
Events in quadrant A5,841,2445,139,649
Events in quadrant B5,773,2385,440,549
Events in quadrant C5,554,0784,801,436
Events in quadrant D4,970,2804,412,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03043830
B02554010
C04324500
D03070970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022020
B022020
C022020
D022020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10854967216.191674%
B10854943854.039650%
C1085431442513.289664%
D10854981557.512736%

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 124620 108491 0 0 0.00% 0.00%
B 124619 108510 0 0 0.00% 0.00%
C 124619 108436 0 0 0.00% 0.00%
D 124619 108348 0 0 0.00% 0.00%

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 7 110 4768 8.72 1524 1425 383.3
A 15 236 4648 8.41 1524 1425 383.3
A 0 29 4620 8.34 1524 1425 383.3
B 2 9 5242 12.43 1523 1446 305.3
B 2 8 4131 8.8 1523 1446 305.3
B 3 17 4045 8.51 1523 1446 305.3
C 1 81 4213 7.41 1473 1371 383.4
C 1 80 4188 7.35 1473 1371 383.4
C 3 202 4070 7.04 1473 1371 383.4
D 7 3 3581 5.78 1433 1302 394.3
D 6 67 3559 5.72 1433 1302 394.3
D 10 113 3547 5.69 1433 1302 394.3

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