ASTROSAT CZTI

Data Quality Report

Orbit 41271

Creation date: 2024-06-27T22:26:49.502737
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_41271cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41271cztM0_level2_quad_clean.evt
Size (bytes)300,962,88086,535,360
Size287.0 MB 82.5 MB
Events in quadrant A2,574,947580,339
Events in quadrant B2,402,348597,588
Events in quadrant C2,624,664570,606
Events in quadrant D3,161,739532,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104522
B0103391
C0105861
D0125331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4834110.227555%
B4834180.372362%
C4834911.882499%
D4834731.510137%

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 6898 4835 2 2 0.03% 0.04%
B 6898 4835 7 7 0.10% 0.14%
C 6898 4835 97 97 1.41% 2.01%
D 6898 4835 47 47 0.68% 0.97%

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 421434 3729.01 551 540 112.9
A 13 248 11323 95.53 551 540 112.9
A 2 79 6637 54.02 551 540 112.9
B 0 190 68056 647.79 547 532 104.2
B 5 255 55815 530.36 547 532 104.2
B 0 229 49249 467.37 547 532 104.2
C 0 10 269567 2125.29 544 548 126.6
C 15 214 204385 1610.34 544 548 126.6
C 9 54 27631 213.96 544 548 126.6
D 2 120 329129 2481.76 548 536 132.4
D 1 52 242793 1829.69 548 536 132.4
D 2 249 216746 1632.97 548 536 132.4

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