ASTROSAT CZTI

Data Quality Report

Orbit 23191

Creation date: 2024-06-27T18:51:06.794374
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/AS1T03_175T01_9000003428_23191cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23191cztM0_level2_quad_clean.evt
Size (bytes)515,056,32094,118,400
Size491.2 MB 89.8 MB
Events in quadrant A3,048,776608,913
Events in quadrant B3,115,482620,987
Events in quadrant C3,422,282605,609
Events in quadrant D5,577,335567,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132221
B0133281
C0142781
D0210691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405460.718189%
B6406691.077115%
C64061552.419607%
D640664610.084296%

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 7290 6406 0 0 0.00% 0.00%
B 7291 6406 3 3 0.04% 0.05%
C 7291 6407 28 28 0.38% 0.44%
D 7291 6407 430 430 5.90% 6.71%

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 13 254 10527 61.07 789 774 159.7
A 6 16 7607 42.79 789 774 159.7
A 3 137 6867 38.15 789 774 159.7
B 12 111 18268 117.34 790 772 149.1
B 11 111 16300 104.14 790 772 149.1
B 14 111 14108 89.44 790 772 149.1
C 0 10 193793 1085.04 765 773 177.9
C 14 238 121842 680.58 765 773 177.9
C 7 247 100580 561.05 765 773 177.9
D 1 52 2225482 12269.9 744 724 181.3
D 7 238 327453 1801.96 744 724 181.3
D 13 153 82756 452.42 744 724 181.3

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