ASTROSAT CZTI

Data Quality Report

Orbit 34807

Creation date: 2024-06-27T21:05:30.537336
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/AS1C07_005T01_9000004992_34807cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34807cztM0_level2_quad_clean.evt
Size (bytes)274,389,12061,217,280
Size261.7 MB 58.4 MB
Events in quadrant A1,831,754411,246
Events in quadrant B1,824,622418,102
Events in quadrant C1,936,372403,505
Events in quadrant D2,486,154381,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076742
B075301
C078561
D097231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3385250.738552%
B3385320.945347%
C3385240.709010%
D33851674.933530%

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 4877 3386 16 16 0.33% 0.47%
B 4877 3386 15 15 0.31% 0.44%
C 4877 3386 14 14 0.29% 0.41%
D 4877 3386 142 142 2.91% 4.19%

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 15 169 250392 3084.44 398 389 81.1
A 10 83 28525 347.13 398 389 81.1
A 13 254 6293 72.84 398 389 81.1
B 5 172 157920 2053.65 398 387 76.7
B 5 255 46108 596.03 398 387 76.7
B 4 232 25165 323.01 398 387 76.7
C 15 214 153445 1673.05 388 389 91.5
C 14 67 126492 1378.43 388 389 91.5
C 0 10 62059 674.11 388 389 91.5
D 8 195 392804 4145.91 380 368 94.7
D 2 249 224151 2364.17 380 368 94.7
D 10 118 210187 2216.64 380 368 94.7

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