ASTROSAT CZTI

Data Quality Report

Orbit 41276

Creation date: 2024-06-27T22:26:54.206083
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_052T04_9000005638_41276cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41276cztM0_level2_quad_clean.evt
Size (bytes)441,106,56088,827,840
Size420.7 MB 84.7 MB
Events in quadrant A3,160,135632,621
Events in quadrant B2,543,562641,927
Events in quadrant C6,780,909436,984
Events in quadrant D3,390,250570,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128413
B0117532
C0240802
D0141262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5822320.549639%
B5822150.257643%
C5822174629.989694%
D58221442.473377%

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 7254 5823 25 25 0.34% 0.43%
B 7254 5823 5 5 0.07% 0.09%
C 7254 5823 1715 1715 23.64% 29.45%
D 7254 5823 149 149 2.05% 2.56%

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 551612 4270.96 629 615 129.0
A 6 10 149390 1153.21 629 615 129.0
A 12 189 18516 138.76 629 615 129.0
B 0 245 34228 275.16 623 604 122.2
B 5 255 20957 166.56 623 604 122.2
B 7 202 20201 160.37 623 604 122.2
C 9 54 4410506 40633.72 465 468 108.5
C 0 10 350287 3223.2 465 468 108.5
C 15 214 194471 1787.53 465 468 108.5
D 12 233 437495 2920.03 611 593 149.6
D 1 47 200492 1336.02 611 593 149.6
D 1 52 174649 1163.3 611 593 149.6

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