ASTROSAT CZTI

Data Quality Report

Orbit 38853

Creation date: 2024-06-27T21:57:16.357634
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_077T06_9000005408_38853cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38853cztM0_level2_quad_clean.evt
Size (bytes)351,947,52090,607,680
Size335.6 MB 86.4 MB
Events in quadrant A2,615,921625,739
Events in quadrant B2,334,431651,169
Events in quadrant C2,484,136623,737
Events in quadrant D5,215,822503,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107613
B099622
C0102212
D0188472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A484880.165017%
B484880.165017%
C4848160.330033%
D484871914.830858%

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 6970 4849 5 5 0.07% 0.10%
B 6970 4849 2 2 0.03% 0.04%
C 6970 4849 10 10 0.14% 0.21%
D 6970 4849 686 686 9.84% 14.15%

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 366963 3183.74 574 563 115.1
A 15 174 9722 79.58 574 563 115.1
A 9 143 9244 75.43 574 563 115.1
B 4 251 31428 280.02 577 563 110.2
B 0 230 15054 131.47 577 563 110.2
B 12 111 13250 115.1 577 563 110.2
C 15 214 201918 1534.72 568 573 131.2
C 0 10 24164 179.82 568 573 131.2
C 1 23 18357 135.56 568 573 131.2
D 2 250 1430576 11103.23 527 515 128.8
D 12 6 970052 7527.64 527 515 128.8
D 2 249 323166 2505.11 527 515 128.8

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