ASTROSAT CZTI

Data Quality Report

Orbit 27667

Creation date: 2024-06-27T19:42:47.915069
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_257T01_9000003976_27667cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27667cztM0_level2_quad_clean.evt
Size (bytes)699,534,72085,109,760
Size667.1 MB 81.2 MB
Events in quadrant A3,863,285520,552
Events in quadrant B4,143,500526,736
Events in quadrant C3,961,086504,571
Events in quadrant D8,676,213470,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166620
B0173730
C0167700
D0311960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79923234.041542%
B79934345.429751%
C79933494.366321%
D7993180722.607281%

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 8292 7992 2 2 0.02% 0.03%
B 8293 7993 35 35 0.42% 0.44%
C 8293 7993 0 0 0.00% 0.00%
D 8293 7993 1441 1441 17.38% 18.03%

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 15 174 18730 87.54 994 971 202.9
A 13 254 12810 58.36 994 971 202.9
A 3 137 10310 46.04 994 971 202.9
B 10 245 239054 1235.38 986 957 192.7
B 12 111 24330 121.27 986 957 192.7
B 11 111 22156 109.99 986 957 192.7
C 14 238 150660 663.33 955 958 225.7
C 3 233 62781 273.94 955 958 225.7
C 8 128 13461 55.4 955 958 225.7
D 1 52 5334156 25790.99 860 832 206.8
D 2 250 41934 198.76 860 832 206.8
D 2 234 38048 179.97 860 832 206.8

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