ASTROSAT CZTI

Data Quality Report

Orbit 34451

Creation date: 2022-02-10T23:52:50.664525
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_058T06_9000004920_34451cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34451cztM0_level2_quad_clean.evt
Size (bytes)515,033,28061,009,920
Size491.2 MB 58.2 MB
Events in quadrant A2,878,895380,783
Events in quadrant B4,172,791374,552
Events in quadrant C3,690,917367,882
Events in quadrant D4,498,572354,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118283
B0160442
C0148502
D0170312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5271170.322519%
B52713436.507304%
C5271430.815784%
D52711112.105862%

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 7364 5272 1 1 0.01% 0.02%
B 7364 5272 221 221 3.00% 4.19%
C 7364 5272 21 21 0.29% 0.40%
D 7364 5272 76 76 1.03% 1.44%

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 37737 259.41 726 715 142.7
A 15 169 19639 132.6 726 715 142.7
A 9 143 11113 72.86 726 715 142.7
B 5 172 831599 6394.36 699 683 129.9
B 0 190 230090 1765.41 699 683 129.9
B 4 171 130369 998.01 699 683 129.9
C 4 254 685480 4366.47 688 697 156.8
C 15 214 224276 1425.63 688 697 156.8
C 3 233 51663 324.98 688 697 156.8
D 8 195 1121631 6085.7 681 670 184.2
D 12 235 178124 963.4 681 670 184.2
D 2 250 128738 695.28 681 670 184.2

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