ASTROSAT CZTI

Data Quality Report

Orbit 42151

Creation date: 2024-06-27T22:37:33.670522
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/AS1C07_001T11_9000005760_42151cztM0_level2.fits modeM0/AS1C07_001T11_9000005760_42151cztM0_level2_quad_clean.evt
Size (bytes)378,020,16089,648,640
Size360.5 MB 85.5 MB
Events in quadrant A3,442,840608,162
Events in quadrant B3,161,971603,559
Events in quadrant C2,526,408595,498
Events in quadrant D4,433,466521,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138492
B0132102
C0111282
D0170272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504330.599564%
B55051352.452316%
C550450.090843%
D55044337.867006%

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 7206 5505 13 13 0.18% 0.24%
B 7207 5506 85 85 1.18% 1.54%
C 7206 5505 2 2 0.03% 0.04%
D 7206 5505 378 378 5.25% 6.87%

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 646761 5302.81 591 577 121.9
A 12 189 281806 2307.86 591 577 121.9
A 15 223 113254 924.67 591 577 121.9
B 4 171 213108 1894.02 583 566 112.2
B 15 35 170912 1518.0 583 566 112.2
B 0 156 127014 1126.81 583 566 112.2
C 15 214 233730 1724.65 580 584 135.2
C 12 249 12881 90.96 580 584 135.2
C 15 159 9234 63.99 580 584 135.2
D 1 47 763467 5510.47 565 550 138.4
D 1 52 491186 3543.81 565 550 138.4
D 6 252 403142 2907.88 565 550 138.4

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