ASTROSAT CZTI

Data Quality Report

Orbit 41671

Creation date: 2024-06-27T22:31:22.487196
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/AS1T05_117T01_9000005684_41671cztM0_level2.fits modeM0/AS1T05_117T01_9000005684_41671cztM0_level2_quad_clean.evt
Size (bytes)1,012,682,880246,225,600
Size965.8 MB 234.8 MB
Events in quadrant A8,458,1081,659,367
Events in quadrant B7,188,7971,704,799
Events in quadrant C7,865,2191,638,226
Events in quadrant D12,760,9661,371,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343914
B0323654
C0335594
D0489014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156641040.663943%
B15664330.210674%
C156641140.727783%
D1566414399.186670%

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 19811 15667 73 73 0.37% 0.47%
B 19811 15667 8 8 0.04% 0.05%
C 19811 15667 107 107 0.54% 0.68%
D 19811 15667 1381 1381 6.97% 8.81%

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 1409818 4012.12 1713 1677 351.0
A 15 223 314909 892.47 1713 1677 351.0
A 13 248 41146 112.46 1713 1677 351.0
B 0 190 312973 942.0 1704 1655 330.5
B 5 255 109032 324.91 1704 1655 330.5
B 12 111 43117 125.46 1704 1655 330.5
C 15 214 630018 1617.52 1674 1684 388.5
C 14 254 318039 814.39 1674 1684 388.5
C 0 10 199837 510.1 1674 1684 388.5
D 13 249 3785354 9591.84 1617 1573 394.5
D 2 249 1986298 5031.25 1617 1573 394.5
D 2 120 387968 979.51 1617 1573 394.5

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