ASTROSAT CZTI

Data Quality Report

Orbit 42451

Creation date: 2024-06-27T22:40:21.408955
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_001T10_9000005806_42451cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42451cztM0_level2_quad_clean.evt
Size (bytes)450,849,60088,237,440
Size430.0 MB 84.1 MB
Events in quadrant A3,180,263627,619
Events in quadrant B4,936,440504,640
Events in quadrant C2,904,874614,651
Events in quadrant D5,210,509514,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132193
B0191462
C0126902
D0196432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870200.340716%
B5870118920.255537%
C5870330.562181%
D587072812.402044%

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 7153 5871 9 9 0.13% 0.15%
B 7153 5871 881 881 12.32% 15.01%
C 7153 5871 22 22 0.31% 0.37%
D 7153 5871 655 655 9.16% 11.16%

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 627137 4971.31 615 602 126.0
A 12 189 103618 817.39 615 602 126.0
A 13 248 44039 344.66 615 602 126.0
B 0 186 2583850 23952.06 549 533 107.9
B 5 255 62215 571.9 549 533 107.9
B 3 112 44456 407.25 549 533 107.9
C 10 34 244889 1722.65 603 607 141.8
C 15 214 243294 1711.4 603 607 141.8
C 14 254 40512 281.41 603 607 141.8
D 1 52 1248874 8867.53 578 561 140.8
D 13 249 670958 4762.24 578 561 140.8
D 2 16 329441 2336.24 578 561 140.8

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