ASTROSAT CZTI

Data Quality Report

Orbit 23225

Creation date: 2024-06-27T18:51:32.326698
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/AS1A08_009T01_9000003434_23225cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23225cztM0_level2_quad_clean.evt
Size (bytes)748,448,640154,684,800
Size713.8 MB 147.5 MB
Events in quadrant A4,929,504991,679
Events in quadrant B5,032,9061,015,848
Events in quadrant C5,203,154972,488
Events in quadrant D6,758,140945,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221441
B0222352
C0226291
D0275601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10965630.574555%
B10965580.528956%
C109651040.948472%
D109662652.416560%

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 11480 10966 1 1 0.01% 0.01%
B 11481 10966 0 0 0.00% 0.00%
C 11481 10967 4 4 0.03% 0.04%
D 11481 10967 177 177 1.54% 1.61%

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 13 254 16604 60.1 1274 1245 255.6
A 3 137 11293 39.32 1274 1245 255.6
A 0 226 10998 38.16 1274 1245 255.6
B 12 111 30179 118.95 1276 1244 243.3
B 11 111 26794 105.03 1276 1244 243.3
B 0 190 26295 102.98 1276 1244 243.3
C 14 238 195110 682.02 1223 1233 284.3
C 0 10 105695 367.47 1223 1233 284.3
C 2 16 98039 340.54 1223 1233 284.3
D 1 52 1141236 3798.84 1230 1192 300.1
D 2 152 252300 836.74 1230 1192 300.1
D 2 82 201113 666.17 1230 1192 300.1

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