ASTROSAT CZTI

Data Quality Report

Orbit 28776

Creation date: 2024-06-27T19:56:10.146857
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/AS1C05_019T04_9000004130_28776cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28776cztM0_level2_quad_clean.evt
Size (bytes)512,487,360114,312,960
Size488.7 MB 109.0 MB
Events in quadrant A3,049,857792,337
Events in quadrant B3,076,735807,560
Events in quadrant C4,601,182729,803
Events in quadrant D4,384,599711,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125891
B0127201
C0176441
D0170871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018320.531738%
B6018520.864074%
C60183736.198072%
D60182994.968428%

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 7368 6018 0 0 0.00% 0.00%
B 7368 6018 1 1 0.01% 0.02%
C 7368 6018 47 47 0.64% 0.78%
D 7368 6018 246 246 3.34% 4.09%

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 13 254 10962 65.54 786 773 155.5
A 14 238 8848 51.94 786 773 155.5
A 3 137 6901 39.42 786 773 155.5
B 0 229 21027 140.79 776 760 144.0
B 12 111 16747 111.06 776 760 144.0
B 11 111 15091 99.56 776 760 144.0
C 3 233 1597187 9783.66 720 724 163.2
C 14 238 141380 861.99 720 724 163.2
C 14 254 32352 193.83 720 724 163.2
D 1 52 940189 5498.69 727 710 170.9
D 8 195 607635 3552.28 727 710 170.9
D 12 233 76460 443.36 727 710 170.9

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