ASTROSAT CZTI

Data Quality Report

Orbit 48194

Creation date: 2024-08-27T12:40:33.849483
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/AS1A13_037T05_9000006414_48194cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48194cztM0_level2_quad_clean.evt
Size (bytes)1,970,519,040208,247,040
Size1.8 GB 198.6 MB
Events in quadrant A19,808,9712,058,584
Events in quadrant B3,323,770132,374
Events in quadrant C9,286,1952,011,212
Events in quadrant D38,995,604738,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0738704
B0206124
C0421924
D01293804

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195407043.602866%
B195401953799.984647%
C195404172.134084%
D195401457574.590583%

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 20720 19543 4 4 0.02% 0.02%
B 20719 19539 0 0 0.00% 0.00%
C 20720 19544 70 70 0.34% 0.36%
D 20719 19540 10994 10994 53.06% 56.26%

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 11118441 24464.74 2186 2137 454.4
A 10 255 145487 315.48 2186 2137 454.4
A 13 254 40588 84.62 2186 2137 454.4
B 2 177 2699159 85955.75 143 139 31.4
B 4 21 42314 1343.15 143 139 31.4
B 0 186 5859 182.16 143 139 31.4
C 12 2 529383 1027.88 2173 2180 512.9
C 14 254 221769 428.13 2173 2180 512.9
C 11 16 20461 35.64 2173 2180 512.9
D 8 129 32994965 129887.93 976 942 254.0
D 2 165 1345542 5293.3 976 942 254.0
D 12 233 277991 1090.66 976 942 254.0

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