ASTROSAT CZTI

Data Quality Report

Orbit 34942

Creation date: 2022-03-16T01:57:57.433599
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_069T01_9000005008_34942cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34942cztM0_level2_quad_clean.evt
Size (bytes)708,065,28067,271,040
Size675.3 MB 64.2 MB
Events in quadrant A9,812,472236,122
Events in quadrant B3,063,666508,766
Events in quadrant C2,809,884495,706
Events in quadrant D5,410,615435,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324703
B0122452
C0112822
D0195942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5136361370.346573%
B51361342.609034%
C5136601.168224%
D513657811.253894%

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 7107 5135 3416 3416 48.07% 66.52%
B 7108 5137 102 102 1.44% 1.99%
C 7108 5137 44 44 0.62% 0.86%
D 7107 5136 543 543 7.64% 10.57%

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 15 169 8546148 132414.29 317 311 64.5
A 10 83 33058 507.4 317 311 64.5
A 13 254 4611 66.63 317 311 64.5
B 5 172 544095 4711.74 617 602 115.3
B 0 244 45050 385.34 617 602 115.3
B 0 197 14679 122.04 617 602 115.3
C 15 214 216682 1518.52 610 614 142.3
C 0 10 171236 1199.12 610 614 142.3
C 8 111 23892 163.6 610 614 142.3
D 1 52 678438 4777.62 586 572 141.9
D 8 195 658936 4640.17 586 572 141.9
D 12 227 445297 3134.43 586 572 141.9

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