ASTROSAT CZTI

Data Quality Report

Orbit 37286

Creation date: 2024-06-27T21:37:55.346946
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_103T07_9000005302_37286cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37286cztM0_level2_quad_clean.evt
Size (bytes)491,417,28059,935,680
Size468.7 MB 57.2 MB
Events in quadrant A2,758,726380,561
Events in quadrant B2,807,212387,787
Events in quadrant C3,146,333386,173
Events in quadrant D5,798,877276,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116133
B0118802
C0125142
D0210322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5459120.219820%
B5459641.172376%
C54591462.674483%
D5459125122.916285%

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 8866 5461 8 8 0.09% 0.15%
B 8866 5461 46 46 0.52% 0.84%
C 8866 5460 130 130 1.47% 2.38%
D 8866 5459 1118 1118 12.61% 20.48%

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 265473 2094.0 623 613 126.5
A 9 143 32114 249.05 623 613 126.5
A 13 248 19310 147.82 623 613 126.5
B 5 200 144399 1192.65 624 607 120.6
B 5 172 75394 620.3 624 607 120.6
B 0 213 61722 506.9 624 607 120.6
C 1 23 300762 2130.25 610 616 140.9
C 15 214 231314 1637.35 610 616 140.9
C 0 10 196010 1386.79 610 616 140.9
D 10 253 1653325 12822.91 526 513 128.9
D 2 249 1477347 11457.64 526 513 128.9
D 13 249 405860 3144.78 526 513 128.9

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