ASTROSAT CZTI

Data Quality Report

Orbit 33641

Creation date: 2024-06-27T20:50:58.815234
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/AS1T04_076T01_9000004810_33641cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33641cztM0_level2_quad_clean.evt
Size (bytes)451,730,88092,292,480
Size430.8 MB 88.0 MB
Events in quadrant A2,507,705622,606
Events in quadrant B3,978,628613,154
Events in quadrant C3,209,019627,296
Events in quadrant D3,650,370585,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103643
B0151542
C0127432
D0145192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494030.060729%
B49404028.137652%
C49401162.348178%
D49401172.368421%

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 7093 4941 0 0 0.00% 0.00%
B 7093 4941 341 341 4.81% 6.90%
C 7093 4941 97 97 1.37% 1.96%
D 7093 4941 107 107 1.51% 2.17%

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 13 6 9153 65.87 645 636 129.3
A 10 83 8351 59.66 645 636 129.3
A 13 254 8167 58.24 645 636 129.3
B 5 172 1183122 9994.85 631 618 118.3
B 0 213 87480 734.18 631 618 118.3
B 0 219 47703 397.98 631 618 118.3
C 0 10 288948 2009.58 628 637 143.5
C 15 214 227992 1584.7 628 637 143.5
C 3 233 192088 1334.45 628 637 143.5
D 8 195 472048 2888.42 619 606 163.2
D 13 249 226827 1386.01 619 606 163.2
D 2 249 152398 930.0 619 606 163.2

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