ASTROSAT CZTI

Data Quality Report

Orbit 46164

Creation date: 2024-06-27T23:19:53.258397
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/AS1T05_194T01_9000006180_46164cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46164cztM0_level2_quad_clean.evt
Size (bytes)1,259,326,080200,329,920
Size1.2 GB 191.0 MB
Events in quadrant A11,697,0721,393,701
Events in quadrant B8,302,0651,422,998
Events in quadrant C14,379,0551,107,452
Events in quadrant D11,183,2271,196,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427193
B0334155
C0521703
D0426093

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136594813.521488%
B136595974.370745%
C13659326723.918296%
D1365911858.675599%

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 14189 13662 13 13 0.09% 0.10%
B 14189 13663 143 143 1.01% 1.05%
C 14189 13662 1986 1986 14.00% 14.54%
D 14189 13662 716 716 5.05% 5.24%

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 5613547 18012.89 1504 1469 311.6
A 7 3 126182 400.29 1504 1469 311.6
A 0 247 69153 217.24 1504 1469 311.6
B 3 112 1694888 5802.86 1494 1445 291.8
B 5 172 553279 1890.95 1494 1445 291.8
B 15 201 72454 243.32 1494 1445 291.8
C 14 254 8757842 27894.03 1343 1348 313.9
C 12 2 233997 741.11 1343 1348 313.9
C 10 218 98802 310.44 1343 1348 313.9
D 1 52 1967930 5374.87 1456 1408 365.9
D 13 249 985454 2689.58 1456 1408 365.9
D 5 235 832229 2270.79 1456 1408 365.9

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