ASTROSAT CZTI

Data Quality Report

Orbit 41049

Creation date: 2024-06-27T22:23:41.756755
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_029T02_9000005590_41049cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41049cztM0_level2_quad_clean.evt
Size (bytes)333,734,40091,981,440
Size318.3 MB 87.7 MB
Events in quadrant A2,944,959613,333
Events in quadrant B2,485,621630,844
Events in quadrant C2,836,510605,821
Events in quadrant D3,645,309539,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120413
B0114202
C0119562
D0149652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5666100.176491%
B566670.123544%
C5666280.494176%
D56662704.765267%

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 7249 5667 2 2 0.03% 0.04%
B 7249 5667 0 0 0.00% 0.00%
C 7249 5667 26 26 0.36% 0.46%
D 7249 5667 218 218 3.01% 3.85%

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 516098 3986.44 626 612 129.3
A 13 254 7756 55.25 626 612 129.3
A 3 137 7280 51.57 626 612 129.3
B 0 229 22923 182.52 621 604 122.3
B 0 190 19517 154.66 621 604 122.3
B 12 111 15836 124.56 621 604 122.3
C 15 214 261845 1820.87 609 612 143.5
C 14 254 98629 683.21 609 612 143.5
C 0 10 95518 661.52 609 612 143.5
D 13 249 1014429 6886.96 599 581 147.2
D 12 0 138724 938.39 599 581 147.2
D 13 171 85187 574.72 599 581 147.2

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