ASTROSAT CZTI

Data Quality Report

Orbit 16452

Creation date: 2024-06-27T17:22:53.520036
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/AS1C04_007T04_9000002430_16452cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16452cztM0_level2_quad_clean.evt
Size (bytes)445,472,64083,367,360
Size424.8 MB 79.5 MB
Events in quadrant A3,209,394521,826
Events in quadrant B3,558,002536,077
Events in quadrant C3,224,978518,957
Events in quadrant D3,068,995506,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137432
B0145731
C0135111
D0137351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63201121.772152%
B63201021.613924%
C6320590.933544%
D6320781.234177%

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 7261 6322 67 67 0.92% 1.06%
B 7261 6321 39 39 0.54% 0.62%
C 7261 6322 1 1 0.01% 0.02%
D 7261 6322 55 55 0.76% 0.87%

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 15 174 321205 2096.71 748 730 152.8
A 13 248 10759 65.61 748 730 152.8
A 0 226 6564 38.17 748 730 152.8
B 15 35 166736 1133.22 756 735 146.5
B 7 220 152183 1033.87 756 735 146.5
B 0 229 68823 464.81 756 735 146.5
C 3 233 272983 1609.67 718 720 169.1
C 14 238 111331 653.95 718 720 169.1
C 7 247 24036 137.85 718 720 169.1
D 5 222 125961 706.1 722 699 177.4
D 12 218 61863 344.78 722 699 177.4
D 10 70 56665 315.48 722 699 177.4

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