ASTROSAT CZTI

Data Quality Report

Orbit 31718

Creation date: 2024-06-27T20:31:53.633240
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_034T01_9000004632_31718cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31718cztM0_level2_quad_clean.evt
Size (bytes)725,800,320100,238,400
Size692.2 MB 95.6 MB
Events in quadrant A7,642,573588,848
Events in quadrant B5,541,418671,552
Events in quadrant C4,155,023647,755
Events in quadrant D4,170,577640,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273812
B0215632
C0166292
D0171172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6975172124.673835%
B69752213.168459%
C69753324.759857%
D6974841.204474%

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 8750 6977 1158 1158 13.23% 16.60%
B 8750 6977 15 15 0.17% 0.21%
C 8750 6977 129 129 1.47% 1.85%
D 8749 6976 31 31 0.35% 0.44%

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 0 13 4600728 29264.14 782 767 157.2
A 12 96 16302 98.83 782 767 157.2
A 13 254 11642 69.18 782 767 157.2
B 6 159 1913389 11339.27 879 856 168.7
B 0 229 77988 457.31 879 856 168.7
B 5 172 35356 204.55 879 856 168.7
C 0 10 546363 2781.48 837 846 196.1
C 14 238 134877 683.4 837 846 196.1
C 10 22 110334 558.26 837 846 196.1
D 8 195 545143 2642.53 861 839 206.0
D 12 227 271221 1312.67 861 839 206.0
D 2 250 64302 308.1 861 839 206.0

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