ASTROSAT CZTI

Data Quality Report

Orbit 34525

Creation date: 2022-02-15T21:18:47.172919
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/AS1A06_005T01_9000004932_34525cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34525cztM0_level2_quad_clean.evt
Size (bytes)507,718,08088,911,360
Size484.2 MB 84.8 MB
Events in quadrant A2,604,439609,469
Events in quadrant B4,192,946577,978
Events in quadrant C2,843,022599,094
Events in quadrant D5,381,712539,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109703
B0157982
C0115312
D0196932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229140.267738%
B522953110.154905%
C5229300.573723%
D52294819.198700%

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 7352 5230 1 1 0.01% 0.02%
B 7352 5229 406 406 5.52% 7.76%
C 7352 5230 17 17 0.23% 0.33%
D 7352 5230 484 484 6.58% 9.25%

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 39122 297.4 648 639 129.4
A 9 143 22924 172.22 648 639 129.4
A 14 234 16442 122.13 648 639 129.4
B 5 172 1007095 8799.72 608 594 114.4
B 4 170 542389 4736.85 608 594 114.4
B 0 190 96921 842.18 608 594 114.4
C 15 214 236573 1665.02 620 626 141.7
C 14 67 95545 669.82 620 626 141.7
C 0 10 89698 628.56 620 626 141.7
D 7 80 1004750 6843.63 603 587 146.7
D 8 195 754941 5141.12 603 587 146.7
D 7 223 452469 3079.69 603 587 146.7

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