ASTROSAT CZTI

Data Quality Report

Orbit 38151

Creation date: 2024-06-27T21:49:03.116710
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/AS1A07_145T01_9000005370_38151cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38151cztM0_level2_quad_clean.evt
Size (bytes)399,735,360107,717,760
Size381.2 MB 102.7 MB
Events in quadrant A3,455,416729,059
Events in quadrant B3,083,662743,601
Events in quadrant C3,119,082709,400
Events in quadrant D4,634,277627,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142543
B0135112
C0132102
D0181032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484240.370142%
B6484240.370142%
C648460.092535%
D64843815.876002%

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 9200 6486 7 7 0.08% 0.11%
B 9200 6486 10 10 0.11% 0.15%
C 9200 6486 1 1 0.01% 0.02%
D 9200 6486 378 378 4.11% 5.83%

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 423923 2850.63 728 711 148.5
A 12 16 87912 587.36 728 711 148.5
A 10 248 40959 271.1 728 711 148.5
B 5 172 70062 490.95 726 706 141.3
B 4 171 64529 451.78 726 706 141.3
B 5 184 44451 309.66 726 706 141.3
C 15 214 270013 1623.91 711 714 165.8
C 14 254 43486 257.92 711 714 165.8
C 3 233 20606 119.95 711 714 165.8
D 12 227 927215 5487.09 694 673 168.9
D 12 235 423244 2502.51 694 673 168.9
D 13 249 186342 1099.55 694 673 168.9

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