ASTROSAT CZTI

Data Quality Report

Orbit 37997

Creation date: 2024-06-27T21:47:07.566632
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/AS1A11_082T01_9000005356_37997cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37997cztM0_level2_quad_clean.evt
Size (bytes)347,244,48051,770,880
Size331.2 MB 49.4 MB
Events in quadrant A2,807,224312,835
Events in quadrant B2,618,113324,637
Events in quadrant C2,948,721306,114
Events in quadrant D4,082,793266,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112682
B0108161
C0115691
D0155271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5099100.196117%
B5099200.392234%
C50991182.314179%
D50993296.452246%

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 7071 5100 6 6 0.08% 0.12%
B 7071 5100 8 8 0.11% 0.16%
C 7071 5100 110 110 1.56% 2.16%
D 7071 5100 272 272 3.85% 5.33%

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 319134 2551.27 624 612 124.8
A 12 16 35379 278.47 624 612 124.8
A 13 6 11452 86.83 624 612 124.8
B 5 255 71159 605.43 626 611 116.5
B 4 232 23279 194.53 626 611 116.5
B 5 184 21988 183.45 626 611 116.5
C 14 254 315986 2253.38 612 617 140.0
C 15 214 212879 1516.65 612 617 140.0
C 1 23 17088 117.69 612 617 140.0
D 1 52 797907 5476.36 601 585 145.6
D 1 47 533501 3660.3 601 585 145.6
D 7 223 241170 1652.44 601 585 145.6

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