ASTROSAT CZTI

Data Quality Report

Orbit 31921

Creation date: 2024-06-27T20:34:13.335597
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/AS1A10_123T09_9000004654_31921cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31921cztM0_level2_quad_clean.evt
Size (bytes)859,452,48099,221,760
Size819.6 MB 94.6 MB
Events in quadrant A3,328,062685,405
Events in quadrant B6,411,902650,989
Events in quadrant C7,863,298591,717
Events in quadrant D7,961,006594,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143241
B0239571
C0283311
D0286353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6904420.608343%
B69044196.068946%
C6904108815.758980%
D690375710.966247%

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 7489 6905 0 0 0.00% 0.00%
B 7489 6905 168 168 2.24% 2.43%
C 7489 6905 467 467 6.24% 6.76%
D 7488 6904 685 685 9.15% 9.92%

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 12 96 33033 188.7 849 832 170.6
A 13 6 20524 115.4 849 832 170.6
A 13 254 13677 75.27 849 832 170.6
B 6 159 2137189 13729.4 822 801 155.6
B 4 80 446844 2866.48 822 801 155.6
B 5 172 334053 2141.63 822 801 155.6
C 3 233 3230888 17896.35 773 776 180.5
C 0 10 1394032 7719.3 773 776 180.5
C 14 238 123504 679.97 773 776 180.5
D 8 195 2316857 12153.96 792 770 190.6
D 12 33 1594505 8363.33 792 770 190.6
D 2 250 440104 2305.46 792 770 190.6

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