ASTROSAT CZTI

Data Quality Report

Orbit 20211206_A11_060T01_9000004804_level2

Creation date: 2021-12-11T19:41:21.242492
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_060T01_9000004804cztM0_level2_bc.evt modeM0/AS1A11_060T01_9000004804cztM0_level2_quad_clean.evt
Size (bytes)9,727,323,8402,331,518,400
Size9.1 GB 2.2 GB
Events in quadrant A39,076,58414,921,408
Events in quadrant B74,229,89714,398,530
Events in quadrant C69,272,38714,508,994
Events in quadrant D99,090,45813,743,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07270
B07270
C07270
D07280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03836560
B05308360
C04792700
D05954150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038920
B038920
C038920
D038920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1904372330.122350%
B190437135967.139369%
C19043731701.664592%
D19043787614.600472%

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 267916 190441 1 1 0.00% 0.00%
B 267916 190429 419 419 0.16% 0.22%
C 267916 190440 603 603 0.23% 0.32%
D 267916 190435 836 836 0.31% 0.44%

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 295872 130.59 10040 9863 2190.1
A 13 6 188986 81.79 10040 9863 2190.1
A 10 83 114893 47.96 10040 9863 2190.1
B 5 172 17670789 9128.07 9882 9657 1934.8
B 5 255 14972047 7733.24 9882 9657 1934.8
B 0 213 1661702 853.85 9882 9657 1934.8
C 15 214 7850847 3567.7 9847 9787 2197.8
C 4 254 5791336 2630.62 9847 9787 2197.8
C 3 233 4159060 1887.93 9847 9787 2197.8
D 8 195 34174561 15102.87 9713 9447 2262.2
D 2 250 9584254 4232.6 9713 9447 2262.2
D 13 249 5079567 2241.27 9713 9447 2262.2

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