ASTROSAT CZTI

Data Quality Report

Orbit 47894

Creation date: 2024-08-06T20:00:40.331939
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_053T01_9000006370_47894cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47894cztM0_level2_quad_clean.evt
Size (bytes)543,818,880105,995,520
Size518.6 MB 101.1 MB
Events in quadrant A6,510,745721,452
Events in quadrant B3,005,021757,579
Events in quadrant C3,119,500729,429
Events in quadrant D6,986,142542,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234761
B0135891
C0140371
D0253601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65621682.560195%
B6563410.624714%
C6563811.234192%
D6562126519.277659%

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 7747 6562 61 61 0.79% 0.93%
B 7748 6563 13 13 0.17% 0.20%
C 7748 6563 49 49 0.63% 0.75%
D 7747 6561 1130 1130 14.59% 17.22%

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 3711295 25074.84 715 699 148.0
A 7 3 23703 155.45 715 699 148.0
A 13 248 15014 96.74 715 699 148.0
B 5 255 107009 754.71 726 702 140.9
B 12 111 17813 121.48 726 702 140.9
B 11 111 16279 110.59 726 702 140.9
C 12 2 237057 1399.15 723 726 168.9
C 0 207 31565 182.58 723 726 168.9
C 1 3 18448 104.92 723 726 168.9
D 2 37 2412594 15017.84 629 610 160.6
D 12 2 1810394 11268.33 629 610 160.6
D 2 249 171308 1062.82 629 610 160.6

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