ASTROSAT CZTI

Data Quality Report

Orbit 46774

Creation date: 2024-06-27T23:27:28.539007
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/AS1A13_053T01_9000006266_46774cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46774cztM0_level2_quad_clean.evt
Size (bytes)535,178,88095,232,960
Size510.4 MB 90.8 MB
Events in quadrant A6,403,323624,335
Events in quadrant B3,975,167654,903
Events in quadrant C3,299,275622,467
Events in quadrant D5,655,010550,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230781
B0159853
C0144021
D0210411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61683655.917639%
B61681061.718547%
C61682303.728923%
D61685328.625162%

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 7053 6168 181 181 2.57% 2.93%
B 7054 6169 32 32 0.45% 0.52%
C 7053 6169 190 190 2.69% 3.08%
D 7053 6168 556 556 7.88% 9.01%

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 3029708 22252.69 657 642 136.1
A 13 248 459194 3368.7 657 642 136.1
A 9 191 354662 2600.77 657 642 136.1
B 3 112 1154877 8749.81 657 636 131.9
B 0 198 61013 457.69 657 636 131.9
B 4 171 45006 336.35 657 636 131.9
C 1 241 615310 4042.86 642 647 152.0
C 14 254 117078 765.81 642 647 152.0
C 15 208 36527 236.0 642 647 152.0
D 1 52 2448594 15156.81 640 618 161.5
D 13 249 379918 2348.46 640 618 161.5
D 2 249 79901 490.89 640 618 161.5

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