ASTROSAT CZTI

Data Quality Report

Orbit 35893

Creation date: 2022-06-08T22:47:53.299329
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_080T01_9000005146_35893cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35893cztM0_level2_quad_clean.evt
Size (bytes)682,951,68077,558,400
Size651.3 MB 74.0 MB
Events in quadrant A2,733,250519,013
Events in quadrant B3,183,659514,413
Events in quadrant C3,099,737510,357
Events in quadrant D11,283,816408,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117243
B0131762
C0126992
D0373702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5660120.212014%
B56601452.561837%
C5660661.166078%
D5660328758.074205%

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 7213 5661 0 0 0.00% 0.00%
B 7213 5661 87 87 1.21% 1.54%
C 7213 5661 40 40 0.55% 0.71%
D 7213 5661 3533 3533 48.98% 62.41%

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 168240 1243.79 660 647 134.7
A 13 254 9593 66.39 660 647 134.7
A 13 6 7631 51.83 660 647 134.7
B 5 172 462605 3714.81 649 635 124.4
B 5 255 95169 760.17 649 635 124.4
B 0 213 30962 243.87 649 635 124.4
C 15 214 240241 1626.53 637 642 147.3
C 0 207 206475 1397.31 637 642 147.3
C 0 10 158635 1072.54 637 642 147.3
D 1 52 6484456 49109.1 528 512 132.0
D 12 227 2075894 15718.85 528 512 132.0
D 8 195 192483 1453.98 528 512 132.0

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