ASTROSAT CZTI

Data Quality Report

Orbit 48157

Creation date: 2024-08-24T11:43:15.990662
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/AS1C09_009T01_9000006406_48157cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48157cztM0_level2_quad_clean.evt
Size (bytes)451,108,80094,599,360
Size430.2 MB 90.2 MB
Events in quadrant A7,912,357815,591
Events in quadrant B1,232,20348,576
Events in quadrant C3,379,655805,109
Events in quadrant D3,653,175730,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281312
B073862
C0142992
D0152102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66115037.608531%
B66116611100.000000%
C66111201.815157%
D66101342.027231%

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 7766 6612 108 108 1.39% 1.63%
B 7765 6594 0 0 0.00% 0.00%
C 7766 6612 27 27 0.35% 0.41%
D 7765 6611 27 27 0.35% 0.41%

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 4679245 28013.37 806 792 167.0
A 0 243 40505 237.79 806 792 167.0
A 13 248 35598 208.41 806 792 167.0
B 2 177 906704 74109.49 50 49 12.2
B 12 18 61403 5015.04 50 49 12.2
B 4 171 18145 1479.16 50 49 12.2
C 12 2 137688 720.6 806 815 189.9
C 14 254 79852 416.11 806 815 189.9
C 12 250 8228 39.03 806 815 189.9
D 7 67 192705 943.32 808 786 203.5
D 12 233 78823 383.57 808 786 203.5
D 2 165 63637 308.93 808 786 203.5

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