ASTROSAT CZTI

Data Quality Report

Orbit 20200415_T03_189T01_9000003614_level2

Creation date: 2020-04-28T12:16:01.301551
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_189T01_9000003614cztM0_level2_bc.evt modeM0/AS1T03_189T01_9000003614cztM0_level2_quad_clean.evt
Size (bytes)7,835,587,2002,550,153,600
Size7.3 GB 2.4 GB
Events in quadrant A39,372,51316,711,592
Events in quadrant B49,104,97116,665,108
Events in quadrant C79,322,98815,708,840
Events in quadrant D57,170,00815,737,024

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02730
C02730
D02730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820960
B04194490
C05124060
D04371370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037000
B037000
C037000
D037000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18129720271.118055%
B18129858523.227835%
C181298152268.398328%
D18129645582.514121%

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 207773 181294 5 5 0.00% 0.00%
B 207773 181283 500 500 0.24% 0.28%
C 207773 181293 3553 3553 1.71% 1.96%
D 207773 181289 968 968 0.47% 0.53%

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 251446 112.59 10102 9949 2144.9
A 12 96 245008 109.59 10102 9949 2144.9
A 6 16 151719 66.1 10102 9949 2144.9
B 3 64 9731973 5212.34 10056 9834 1865.2
B 7 202 416568 218.06 10056 9834 1865.2
B 0 190 159948 80.48 10056 9834 1865.2
C 7 247 40962248 18427.47 9528 9511 2222.4
C 9 54 655471 290.66 9528 9511 2222.4
C 3 233 312778 136.46 9528 9511 2222.4
D 1 52 8975488 3977.76 9865 9544 2254.0
D 8 195 5289586 2342.5 9865 9544 2254.0
D 13 104 2304173 1018.02 9865 9544 2254.0

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