ASTROSAT CZTI

Data Quality Report

Orbit 17523

Creation date: 2024-06-27T17:37:34.197008
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/AS1A05_140T01_9000002596_17523cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17523cztM0_level2_quad_clean.evt
Size (bytes)1,747,517,760310,363,200
Size1.6 GB 296.0 MB
Events in quadrant A13,267,2471,941,754
Events in quadrant B12,036,4531,975,369
Events in quadrant C12,707,7141,877,417
Events in quadrant D13,181,8941,844,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0568605
B0524065
C0539445
D0566785

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256105101.991410%
B256111740.679396%
C256113021.179181%
D256112250.878529%

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 28625 25616 177 177 0.62% 0.69%
B 28626 25617 3 3 0.01% 0.01%
C 28626 25617 0 0 0.00% 0.00%
D 28626 25617 159 159 0.56% 0.62%

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 15 174 1528084 2490.68 3051 2983 612.3
A 0 226 26312 38.1 3051 2983 612.3
A 3 137 23135 32.91 3051 2983 612.3
B 12 111 72101 117.8 3067 2986 586.7
B 11 111 62702 101.78 3067 2986 586.7
B 14 111 53892 86.77 3067 2986 586.7
C 3 233 626441 895.23 2957 2972 696.4
C 14 238 453611 647.07 2957 2972 696.4
C 5 218 100911 140.63 2957 2972 696.4
D 5 222 1231992 1704.87 2981 2899 720.9
D 13 189 491285 677.44 2981 2899 720.9
D 13 232 102216 137.76 2981 2899 720.9

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