ASTROSAT CZTI

Data Quality Report

Orbit 41197

Creation date: 2024-06-27T22:25:41.833008
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_101T02_9000005622_41197cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41197cztM0_level2_quad_clean.evt
Size (bytes)313,012,80084,931,200
Size298.5 MB 81.0 MB
Events in quadrant A2,717,559575,260
Events in quadrant B2,465,610591,842
Events in quadrant C2,898,211538,613
Events in quadrant D3,106,943508,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110983
B0108442
C0118972
D0131392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510880.156617%
B5108230.450274%
C51082074.052467%
D51081583.093187%

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 6960 5109 3 3 0.04% 0.06%
B 6960 5109 12 12 0.17% 0.23%
C 6960 5109 207 207 2.97% 4.05%
D 6960 5109 132 132 1.90% 2.58%

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 501135 4383.06 558 548 114.2
A 10 255 20868 177.92 558 548 114.2
A 12 189 14190 119.45 558 548 114.2
B 5 255 134908 1256.21 553 538 107.0
B 0 229 69980 649.2 553 538 107.0
B 5 185 35951 331.07 553 538 107.0
C 0 10 626389 5111.61 526 529 122.4
C 15 214 216980 1767.83 526 529 122.4
C 13 61 3572 24.85 526 529 122.4
D 12 217 593799 4482.61 533 519 132.4
D 13 249 379493 2863.39 533 519 132.4
D 2 249 49679 371.43 533 519 132.4

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