ASTROSAT CZTI

Data Quality Report

Orbit 31681

Creation date: 2024-06-27T20:31:29.695695
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_103T09_9000004630_31681cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31681cztM0_level2_quad_clean.evt
Size (bytes)1,014,958,080130,023,360
Size967.9 MB 124.0 MB
Events in quadrant A5,115,272845,800
Events in quadrant B11,373,654757,544
Events in quadrant C7,309,059826,614
Events in quadrant D6,253,840802,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241
B0241
C0241
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021979431
B041441677
C028918444
D025662518

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02093
B02106
C02117
D02095

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101861591.560966%
B10170213220.963618%
C101877847.696083%
D101842182.140613%

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 13970 10219 3 3 0.02% 0.03%
B 13970 10205 1505 1505 10.77% 14.75%
C 13970 10216 238 238 1.70% 2.33%
D 13970 10210 105 105 0.75% 1.03%

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 95342 361.55 1292 1265 260.2
A 12 96 18902 67.78 1292 1265 260.2
A 13 254 18739 67.16 1292 1265 260.2
B 4 80 3888890 17044.61 1185 1155 228.1
B 6 159 2516322 11027.0 1185 1155 228.1
B 0 229 110138 477.8 1185 1155 228.1
C 10 22 1117339 3938.92 1207 1212 283.4
C 3 233 866360 3053.19 1207 1212 283.4
C 0 10 366152 1287.91 1207 1212 283.4
D 8 195 809745 2720.15 1248 1215 297.2
D 13 249 345627 1158.71 1248 1215 297.2
D 10 203 282456 946.19 1248 1215 297.2

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