ASTROSAT CZTI

Data Quality Report

Orbit 34383

Creation date: 2022-02-06T07:29:11.322466
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/AS1A05_085T01_9000004910_34383cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34383cztM0_level2_quad_clean.evt
Size (bytes)762,194,88064,615,680
Size726.9 MB 61.6 MB
Events in quadrant A2,650,843438,134
Events in quadrant B3,136,873436,980
Events in quadrant C6,487,770378,853
Events in quadrant D10,413,719293,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117993
B0131342
C0232942
D0349962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584170.119842%
B58411161.985961%
C584199417.017634%
D5841270746.344804%

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 7275 5842 0 0 0.00% 0.00%
B 7275 5842 81 81 1.11% 1.39%
C 7275 5842 913 913 12.55% 15.63%
D 7275 5842 2590 2590 35.60% 44.33%

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 33152 241.34 669 656 134.6
A 13 6 14334 101.58 669 656 134.6
A 9 143 13982 98.97 669 656 134.6
B 5 172 382318 2969.54 664 648 128.5
B 0 190 61062 470.04 664 648 128.5
B 5 255 24491 185.51 664 648 128.5
C 4 254 3534018 25291.53 604 608 139.7
C 15 214 225713 1611.26 604 608 139.7
C 0 10 164146 1170.58 604 608 139.7
D 7 223 4377766 34015.53 526 511 128.7
D 2 249 2401721 18659.74 526 511 128.7
D 8 195 1256657 9761.48 526 511 128.7

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