ASTROSAT CZTI

Data Quality Report

Orbit 18529

Creation date: 2024-06-27T17:51:03.010392
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/AS1A05_187T03_9000002748_18529cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18529cztM0_level2_quad_clean.evt
Size (bytes)540,233,28089,003,520
Size515.2 MB 84.9 MB
Events in quadrant A3,176,721581,947
Events in quadrant B3,253,488595,813
Events in quadrant C3,445,647559,909
Events in quadrant D6,048,465507,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136073
B0137263
C0145163
D0224273

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439330.512502%
B6438420.652377%
C6438681.056229%
D643864610.034172%

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 7599 6441 1 1 0.01% 0.02%
B 7598 6440 1 1 0.01% 0.02%
C 7598 6440 1 1 0.01% 0.02%
D 7598 6440 596 596 7.84% 9.25%

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 15 191 26921 159.9 801 783 163.5
A 0 13 26701 158.55 801 783 163.5
A 15 174 20325 119.55 801 783 163.5
B 0 197 29567 187.02 805 784 153.9
B 15 222 28817 182.15 805 784 153.9
B 12 111 17899 111.21 805 784 153.9
C 9 54 288762 1600.69 768 773 179.9
C 14 238 119807 661.61 768 773 179.9
C 3 233 21210 113.59 768 773 179.9
D 13 168 1174714 6409.6 746 725 183.2
D 1 52 1024322 5588.51 746 725 183.2
D 7 238 783139 4271.73 746 725 183.2

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