ASTROSAT CZTI

Data Quality Report

Orbit 37641

Creation date: 2024-06-27T21:42:33.128588
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/AS1A11_075T01_9000005342_37641cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37641cztM0_level2_quad_clean.evt
Size (bytes)445,826,88074,016,000
Size425.2 MB 70.6 MB
Events in quadrant A3,968,636448,427
Events in quadrant B2,983,169465,480
Events in quadrant C2,836,975474,096
Events in quadrant D3,319,625448,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157393
B0128152
C0120202
D0140062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57911542.659299%
B5791641.105163%
C579190.155414%
D57911342.313935%

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 7163 5792 120 120 1.68% 2.07%
B 7162 5790 43 43 0.60% 0.74%
C 7162 5790 4 4 0.06% 0.07%
D 7162 5790 99 99 1.38% 1.71%

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 15 222 745643 5751.6 639 626 129.5
A 6 10 354960 2735.49 639 626 129.5
A 10 83 330937 2550.03 639 626 129.5
B 5 172 218883 1745.87 644 628 125.0
B 5 255 46451 366.55 644 628 125.0
B 0 230 35204 276.58 644 628 125.0
C 15 214 269111 1801.32 636 639 149.0
C 0 10 51405 340.62 636 639 149.0
C 14 254 36564 241.04 636 639 149.0
D 2 250 298620 1966.72 625 608 151.5
D 2 249 282874 1862.81 625 608 151.5
D 5 70 79602 521.32 625 608 151.5

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