ASTROSAT CZTI

Data Quality Report

Orbit 26863

Creation date: 2024-06-27T19:33:46.836481
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/AS1T03_224T01_9000003868_26863cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26863cztM0_level2_quad_clean.evt
Size (bytes)227,877,12028,019,520
Size217.3 MB 26.7 MB
Events in quadrant A945,505193,614
Events in quadrant B3,420,866159,355
Events in quadrant C854,464191,910
Events in quadrant D1,564,582179,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038250
B0113330
C035370
D058150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1678120.715137%
B1678106663.528010%
C167870.417163%
D1678643.814064%

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 1678 1678 10 10 0.60% 0.60%
B 1678 1678 977 977 58.22% 58.22%
C 1678 1678 0 0 0.00% 0.00%
D 1678 1678 54 54 3.22% 3.22%

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 0 13 123294 2774.46 212 209 44.4
A 13 254 3005 63.02 212 209 44.4
A 3 137 1867 37.37 212 209 44.4
B 5 31 900323 25295.99 182 178 35.6
B 5 15 894585 25134.74 182 178 35.6
B 5 14 890246 25012.8 182 178 35.6
C 14 238 33846 659.02 208 209 51.0
C 8 128 3865 71.63 208 209 51.0
C 8 112 1502 25.33 208 209 51.0
D 1 52 356803 7439.29 199 196 47.9
D 7 80 327071 6819.04 199 196 47.9
D 12 227 45355 942.08 199 196 47.9

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