ASTROSAT CZTI

Data Quality Report

Orbit 20210712_A10_058T08_9000004532_level2

Creation date: 2021-07-14T12:45:12.753509
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/AS1A10_058T08_9000004532cztM0_level2_bc.evt modeM0/AS1A10_058T08_9000004532cztM0_level2_quad_clean.evt
Size (bytes)3,692,013,120987,762,240
Size3.4 GB 942.0 MB
Events in quadrant A16,836,2986,402,515
Events in quadrant B38,713,3546,293,125
Events in quadrant C27,803,7415,912,622
Events in quadrant D23,248,4066,052,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01605500
B02378700
C02222910
D01800970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A766768421.098127%
B7667622882.983985%
C7667655067.180865%
D7667613881.810214%

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 88972 76681 0 0 0.00% 0.00%
B 88972 76679 13 13 0.01% 0.02%
C 88972 76676 15 15 0.02% 0.02%
D 88972 76673 191 191 0.21% 0.25%

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 134218 140.23 4359 4292 926.5
A 0 226 27363 24.9 4359 4292 926.5
A 12 194 25717 23.12 4359 4292 926.5
B 6 159 20266719 25113.61 4303 4205 806.8
B 4 80 1379453 1704.5 4303 4205 806.8
B 0 230 177125 214.32 4303 4205 806.8
C 3 233 11459246 12222.62 4007 3996 937.2
C 0 10 555402 588.34 4007 3996 937.2
C 14 254 188613 196.98 4007 3996 937.2
D 8 195 4826918 4596.4 4192 4094 1049.3
D 1 52 1017261 965.6 4192 4094 1049.3
D 2 250 453396 428.21 4192 4094 1049.3

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