ASTROSAT CZTI

Data Quality Report

Orbit 46441

Creation date: 2024-06-27T23:23:15.323762
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/AS1A13_062T01_9000006208_46441cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46441cztM0_level2_quad_clean.evt
Size (bytes)460,114,560116,000,640
Size438.8 MB 110.6 MB
Events in quadrant A6,225,168758,472
Events in quadrant B3,372,358786,323
Events in quadrant C3,284,456766,377
Events in quadrant D3,597,738706,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230952
B0149282
C0148192
D0157142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71121812.544994%
B71131101.546464%
C7113670.941937%
D7113731.026290%

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 8857 7114 18 18 0.20% 0.25%
B 8858 7115 6 6 0.07% 0.08%
C 8858 7115 8 8 0.09% 0.11%
D 8858 7115 37 37 0.42% 0.52%

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 3090754 18491.94 800 784 167.1
A 7 3 18069 103.44 800 784 167.1
A 3 7 17647 100.92 800 784 167.1
B 0 189 146276 906.8 800 775 160.5
B 0 190 30616 185.98 800 775 160.5
B 12 111 21329 128.1 800 775 160.5
C 1 3 58803 309.21 797 804 187.6
C 3 233 53350 280.13 797 804 187.6
C 9 54 41699 218.02 797 804 187.6
D 13 249 320393 1611.6 791 767 198.3
D 1 52 214289 1076.61 791 767 198.3
D 14 34 39082 193.19 791 767 198.3

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