ASTROSAT CZTI

Data Quality Report

Orbit 39157

Creation date: 2024-06-27T22:01:12.669694
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/AS1A12_054T02_9000005444_39157cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39157cztM0_level2_quad_clean.evt
Size (bytes)357,557,76096,612,480
Size341.0 MB 92.1 MB
Events in quadrant A2,922,276686,948
Events in quadrant B3,269,264645,720
Events in quadrant C2,637,617641,289
Events in quadrant D4,009,895594,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117273
B0127492
C0105752
D0153492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5095160.314033%
B50953276.418057%
C509560.117763%
D50951492.924436%

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 7218 5096 5 5 0.07% 0.10%
B 7218 5096 296 296 4.10% 5.81%
C 7218 5096 1 1 0.01% 0.02%
D 7218 5096 140 140 1.94% 2.75%

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 430856 3410.39 630 619 126.2
A 15 174 22475 173.25 630 619 126.2
A 15 223 19399 148.86 630 619 126.2
B 5 184 854070 7567.05 593 579 112.8
B 5 172 43599 381.42 593 579 112.8
B 0 190 35744 311.77 593 579 112.8
C 15 214 215270 1543.08 604 609 139.1
C 9 187 54439 386.96 604 609 139.1
C 0 10 6510 42.42 604 609 139.1
D 5 222 777213 5277.49 607 593 147.2
D 12 235 625639 4247.48 607 593 147.2
D 2 249 151990 1028.81 607 593 147.2

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