ASTROSAT CZTI

Data Quality Report

Orbit 06146

Creation date: 2024-06-27T15:03:21.128279
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/AS1C02_018T01_9000000798_06146cztM0_level2.evt modeM0/AS1C02_018T01_9000000798_06146cztM0_level2_quad_clean.evt
Size (bytes)2,038,374,720361,166,400
Size1.9 GB 344.4 MB
Events in quadrant A14,891,0782,213,607
Events in quadrant B18,110,0712,187,654
Events in quadrant C13,185,2982,316,898
Events in quadrant D13,578,5222,219,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0252
C0250
D0251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05962
B05966
C05964
D05960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064375572
B073488713
C060219428
D061888445

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290807112.444979%
B2906817135.893078%
C291164541.559280%
D291285651.939714%

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 31863 29308 83 83 0.26% 0.28%
B 31863 29296 742 742 2.33% 2.53%
C 31863 29310 0 0 0.00% 0.00%
D 31863 29309 60 60 0.19% 0.20%

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 8 15 1505692 2152.04 3417 3341 698.1
A 4 2 84864 116.78 3417 3341 698.1
A 0 50 81952 112.61 3417 3341 698.1
B 3 64 3515061 5398.18 3387 3305 650.5
B 0 219 909867 1393.54 3387 3305 650.5
B 0 214 222394 336.78 3387 3305 650.5
C 9 16 32741 37.7 3354 3374 778.9
C 8 128 28889 32.76 3354 3374 778.9
C 13 61 26729 29.99 3354 3374 778.9
D 13 169 414847 502.24 3352 3246 819.5
D 5 97 190067 227.96 3352 3246 819.5
D 8 195 124399 147.83 3352 3246 819.5

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