ASTROSAT CZTI

Data Quality Report

Orbit 25987

Creation date: 2024-06-27T19:23:33.627127
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/AS1A07_068T01_9000003760_25987cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25987cztM0_level2_quad_clean.evt
Size (bytes)575,956,800113,094,720
Size549.3 MB 107.9 MB
Events in quadrant A3,942,075743,510
Events in quadrant B3,709,545748,620
Events in quadrant C3,703,118710,376
Events in quadrant D5,565,643687,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168200
B0160350
C0160430
D0218990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76992313.000390%
B7696971.260395%
C77011071.389430%
D76985617.287607%

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 8378 7704 81 81 0.97% 1.05%
B 8378 7705 1 1 0.01% 0.01%
C 8377 7704 2 2 0.02% 0.03%
D 8378 7705 448 448 5.35% 5.81%

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 0 13 319746 1676.43 939 920 190.2
A 13 254 12227 59.45 939 920 190.2
A 3 137 8919 42.06 939 920 190.2
B 0 190 24342 130.54 934 911 179.5
B 12 111 22186 118.52 934 911 179.5
B 11 111 19685 104.59 934 911 179.5
C 14 238 143571 685.54 890 895 208.1
C 0 207 43783 206.07 890 895 208.1
C 3 233 34997 163.86 890 895 208.1
D 1 52 2015073 9538.17 880 858 211.2
D 12 233 123417 580.37 880 858 211.2
D 7 80 42122 195.4 880 858 211.2

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