ASTROSAT CZTI

Data Quality Report

Orbit 35988

Creation date: 2022-07-19T00:37:36.307914
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_050T19_9000005156_35988cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35988cztM0_level2_quad_clean.evt
Size (bytes)2,082,265,920213,076,800
Size1.9 GB 203.2 MB
Events in quadrant A6,225,1281,743,256
Events in quadrant B25,403,472865,892
Events in quadrant C17,383,9481,354,506
Events in quadrant D13,193,1441,599,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262724
B0840318
C0600803
D0482153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12771150.117454%
B12772881769.033824%
C12860438134.066874%
D12807134110.470836%

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 19199 12775 0 0 0.00% 0.00%
B 19199 12773 8611 8611 44.85% 67.42%
C 19199 12863 4106 4106 21.39% 31.92%
D 19199 12811 978 978 5.09% 7.63%

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 10 83 329256 1090.65 1521 1493 300.5
A 13 254 20373 62.82 1521 1493 300.5
A 3 137 14824 44.36 1521 1493 300.5
B 5 31 9363114 62386.7 806 787 150.1
B 5 15 8341049 55576.08 806 787 150.1
B 5 14 3268597 21775.34 806 787 150.1
C 9 187 11855779 43723.47 1189 1199 271.1
C 15 214 436561 1605.75 1189 1199 271.1
C 0 207 259974 954.44 1189 1199 271.1
D 1 52 4307912 12360.88 1447 1411 348.4
D 12 227 784969 2249.03 1447 1411 348.4
D 12 6 531084 1520.31 1447 1411 348.4

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