ASTROSAT CZTI

Data Quality Report

Orbit 20211204_A11_065T01_9000004794_level2

Creation date: 2021-12-06T16:38:14.260635
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/AS1A11_065T01_9000004794cztM0_level2_bc.evt modeM0/AS1A11_065T01_9000004794cztM0_level2_quad_clean.evt
Size (bytes)1,422,694,080292,265,280
Size1.3 GB 278.7 MB
Events in quadrant A5,664,3811,912,148
Events in quadrant B10,326,5241,803,343
Events in quadrant C7,084,1361,853,444
Events in quadrant D18,301,6571,556,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511370
B0722530
C0547190
D01077340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25076270.107673%
B2507621608.613814%
C250762541.012921%
D25076467918.659276%

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 39923 25076 0 0 0.00% 0.00%
B 39923 25077 102 102 0.26% 0.41%
C 39923 25076 64 64 0.16% 0.26%
D 39923 25058 855 855 2.14% 3.41%

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 47 334734 1133.85 1337 1321 294.1
A 13 6 70685 235.89 1337 1321 294.1
A 14 128 58181 193.37 1337 1321 294.1
B 5 172 3560761 13837.78 1288 1261 257.2
B 5 255 497235 1928.13 1288 1261 257.2
B 4 251 470761 1825.21 1288 1261 257.2
C 15 214 1025751 3563.34 1275 1265 287.5
C 14 254 325032 1126.12 1275 1265 287.5
C 1 23 294751 1020.79 1275 1265 287.5
D 8 195 7087000 24176.98 1118 1090 293.1
D 1 52 4620782 15762.29 1118 1090 293.1
D 2 250 448416 1526.27 1118 1090 293.1

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