ASTROSAT CZTI

Data Quality Report

Orbit 46636

Creation date: 2024-06-27T23:25:41.994131
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_092T16_9000006244_46636cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46636cztM0_level2_quad_clean.evt
Size (bytes)475,153,920106,888,320
Size453.1 MB 101.9 MB
Events in quadrant A6,208,512691,594
Events in quadrant B3,333,200725,591
Events in quadrant C2,994,523710,211
Events in quadrant D4,529,861639,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226851
B0145201
C0140471
D0182062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67332253.341750%
B67341372.034452%
C6734480.712801%
D67331832.717956%

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 7623 6734 2 2 0.03% 0.03%
B 7624 6735 4 4 0.05% 0.06%
C 7624 6735 6 6 0.08% 0.09%
D 7623 6734 122 122 1.60% 1.81%

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 3282875 21413.57 739 721 153.3
A 7 3 39106 250.43 739 721 153.3
A 13 254 11664 71.39 739 721 153.3
B 10 246 101610 675.91 748 724 149.3
B 0 189 101002 671.84 748 724 149.3
B 5 32 61367 406.29 748 724 149.3
C 12 249 66544 383.01 734 740 171.8
C 14 254 35296 201.13 734 740 171.8
C 14 67 11437 62.26 734 740 171.8
D 1 52 671360 3669.25 726 704 182.8
D 12 128 490723 2680.96 726 704 182.8
D 13 249 189442 1032.61 726 704 182.8

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