ASTROSAT CZTI

Data Quality Report

Orbit 46857

Creation date: 2024-06-27T23:28:35.195531
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_053T01_9000006274_46857cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46857cztM0_level2_quad_clean.evt
Size (bytes)557,645,760131,405,760
Size531.8 MB 125.3 MB
Events in quadrant A7,255,121883,193
Events in quadrant B4,134,191900,949
Events in quadrant C3,676,746857,538
Events in quadrant D4,936,252763,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266360
B0179900
C0170370
D0207965

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8251841.018058%
B8251520.630227%
C8252240.290839%
D82514135.005454%

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 8251 8251 6 6 0.07% 0.07%
B 8251 8251 16 16 0.19% 0.19%
C 8252 8252 9 9 0.11% 0.11%
D 8252 8252 304 304 3.68% 3.68%

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 3665322 19213.61 911 888 190.7
A 13 248 24519 123.9 911 888 190.7
A 4 0 19587 98.04 911 888 190.7
B 12 3 282293 1573.73 908 879 178.8
B 3 112 145727 810.02 908 879 178.8
B 0 200 32121 174.71 908 879 178.8
C 1 241 86833 406.06 898 900 211.6
C 14 254 84412 394.62 898 900 211.6
C 13 61 5879 23.53 898 900 211.6
D 13 249 974974 4458.5 879 850 218.5
D 1 52 462895 2114.75 879 850 218.5
D 5 171 50400 226.79 879 850 218.5

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