ASTROSAT CZTI

Data Quality Report

Orbit 28825

Creation date: 2024-06-27T19:56:52.177165
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/AS1A10_121T01_9000004134_28825cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28825cztM0_level2_quad_clean.evt
Size (bytes)816,883,20090,771,840
Size779.0 MB 86.6 MB
Events in quadrant A3,513,806603,721
Events in quadrant B4,389,072603,388
Events in quadrant C4,540,470580,359
Events in quadrant D11,809,476459,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150171
B0176331
C0181882
D0402251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71921572.182981%
B71934946.867788%
C71923735.186318%
D7192342747.650167%

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 7402 7192 11 11 0.15% 0.15%
B 7403 7193 283 283 3.82% 3.93%
C 7402 7192 1 1 0.01% 0.01%
D 7402 7192 3242 3242 43.80% 45.08%

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 14 235 65078 365.01 870 851 176.0
A 0 13 49860 278.52 870 851 176.0
A 13 254 14507 77.61 870 851 176.0
B 5 172 942994 5863.36 845 822 160.7
B 10 246 26644 160.7 845 822 160.7
B 5 255 24654 148.31 845 822 160.7
C 3 233 998476 5162.48 826 831 193.2
C 14 238 179747 925.83 826 831 193.2
C 14 254 72889 372.88 826 831 193.2
D 8 195 7467378 43197.07 724 702 172.9
D 1 52 986183 5701.32 724 702 172.9
D 7 38 217939 1256.78 724 702 172.9

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