ASTROSAT CZTI

Data Quality Report

Orbit 41168

Creation date: 2024-06-27T22:25:26.941261
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/AS1A12_101T04_9000005610_41168cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41168cztM0_level2_quad_clean.evt
Size (bytes)445,763,52091,661,760
Size425.1 MB 87.4 MB
Events in quadrant A3,040,842668,104
Events in quadrant B3,425,826663,663
Events in quadrant C6,756,142463,920
Events in quadrant D2,833,325580,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124263
B0141222
C0238302
D0126152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571080.140105%
B57102243.922942%
C5710167629.352014%
D57101081.891419%

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 9295 5712 3 3 0.03% 0.05%
B 9295 5712 189 189 2.03% 3.31%
C 9295 5711 1439 1439 15.48% 25.20%
D 9295 5712 85 85 0.91% 1.49%

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 548457 4236.15 636 625 129.3
A 12 189 24999 188.47 636 625 129.3
A 13 254 9987 72.39 636 625 129.3
B 0 245 903723 7563.33 618 602 119.4
B 7 202 41883 345.71 618 602 119.4
B 5 255 40320 332.62 618 602 119.4
C 9 54 4107722 33996.25 521 523 120.8
C 0 10 397542 3286.22 521 523 120.8
C 15 214 209837 1732.54 521 523 120.8
D 13 249 320284 2177.75 606 591 146.8
D 2 16 88022 595.58 606 591 146.8
D 2 153 38051 255.18 606 591 146.8

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