ASTROSAT CZTI

Data Quality Report

Orbit 34561

Creation date: 2022-02-18T09:12:43.236215
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/AS1A05_103T05_9000004938_34561cztM0_level2.evt modeM0/AS1A05_103T05_9000004938_34561cztM0_level2_quad_clean.evt
Size (bytes)386,144,64069,528,960
Size368.3 MB 66.3 MB
Events in quadrant A1,760,355483,140
Events in quadrant B2,451,068476,073
Events in quadrant C1,905,052478,169
Events in quadrant D5,310,836390,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079852
B099081
C080271
D0184951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A392420.050968%
B39241724.383282%
C392480.203874%
D392490323.012232%

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 3924 3924 0 0 0.00% 0.00%
B 3924 3924 94 94 2.40% 2.40%
C 3924 3924 8 8 0.20% 0.20%
D 3924 3924 780 780 19.88% 19.88%

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 24182 262.85 439 431 90.4
A 15 174 17593 189.93 439 431 90.4
A 0 31 11347 120.81 439 431 90.4
B 5 172 618481 7418.98 434 422 83.3
B 4 81 27781 328.41 434 422 83.3
B 0 245 18531 217.37 434 422 83.3
C 15 214 161322 1586.99 432 436 101.4
C 0 10 44677 436.4 432 436 101.4
C 14 67 11523 109.36 432 436 101.4
D 10 118 1601621 16053.48 381 371 99.7
D 8 195 1273832 12767.2 381 371 99.7
D 12 6 320238 3206.86 381 371 99.7

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