ASTROSAT CZTI

Data Quality Report

Orbit 33934

Creation date: 2024-06-27T20:54:31.949761
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/AS1T04_088T01_9000004846_33934cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33934cztM0_level2_quad_clean.evt
Size (bytes)564,099,84077,558,400
Size538.0 MB 74.0 MB
Events in quadrant A4,274,912493,638
Events in quadrant B3,866,518491,743
Events in quadrant C3,184,590497,675
Events in quadrant D5,369,644464,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165813
B0152182
C0128382
D0198702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57313606.281626%
B57312684.676322%
C57311081.884488%
D57314557.939278%

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 7193 5732 199 199 2.77% 3.47%
B 7193 5732 181 181 2.52% 3.16%
C 7193 5732 69 69 0.96% 1.20%
D 7193 5732 338 338 4.70% 5.90%

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 1732342 13246.55 651 638 130.7
A 10 83 13697 99.89 651 638 130.7
A 13 6 10382 74.54 651 638 130.7
B 5 172 787571 6398.83 647 630 123.0
B 0 189 133780 1082.68 647 630 123.0
B 0 229 121068 979.31 647 630 123.0
C 0 10 298787 2006.65 639 642 148.6
C 15 214 248561 1668.61 639 642 148.6
C 5 1 52164 346.77 639 642 148.6
D 8 195 1289826 7606.85 625 610 169.5
D 13 249 631406 3721.93 625 610 169.5
D 12 233 260050 1530.79 625 610 169.5

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