ASTROSAT CZTI

Data Quality Report

Orbit 49798

Creation date: 2024-12-12T14:44:05.906778
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/AS1A13_037T01_9000006440_49798cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49798cztM0_level2_quad_clean.evt
Size (bytes)1,067,719,68055,267,200
Size1018.3 MB 52.7 MB
Events in quadrant A7,801,317522,636
Events in quadrant B4,111,353678,775
Events in quadrant C11,959,40212,153
Events in quadrant D15,140,914612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276561
B0166471
C0400831
D0494551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6579139621.219030%
B65803595.455927%
C6580648598.556231%
D6580657699.939210%

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 7544 6579 1075 1075 14.25% 16.34%
B 7545 6581 172 172 2.28% 2.61%
C 7544 6579 3067 3067 40.65% 46.62%
D 7544 6579 5636 5636 74.71% 85.67%

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 63 885461 5302.84 667 651 166.9
A 4 205 811108 4857.23 667 651 166.9
A 0 98 503404 3013.1 667 651 166.9
B 10 28 332735 2173.43 722 699 152.8
B 10 44 303973 1985.16 722 699 152.8
B 4 206 166433 1084.85 722 699 152.8
C 15 147 4709321 99171.61 140 138 47.5
C 15 230 2108539 44401.23 140 138 47.5
C 15 213 965835 20336.8 140 138 47.5
D 7 61 4079536 67771.15 173 165 60.2
D 14 52 2513256 41750.32 173 165 60.2
D 15 168 1584143 26314.84 173 165 60.2

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