ASTROSAT CZTI

Data Quality Report

Orbit 23785

Creation date: 2024-06-27T18:58:41.976881
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/AS1A07_113T01_9000003526_23785cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23785cztM0_level2_quad_clean.evt
Size (bytes)557,573,760105,099,840
Size531.7 MB 100.2 MB
Events in quadrant A3,569,231673,070
Events in quadrant B4,179,075690,938
Events in quadrant C3,662,675664,320
Events in quadrant D4,972,518638,968

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154962
B0173152
C0155862
D0198303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7412420.566649%
B74122233.008635%
C74121201.618996%
D74121171.578521%

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 9047 7414 0 0 0.00% 0.00%
B 9047 7412 53 53 0.59% 0.72%
C 9047 7414 0 0 0.00% 0.00%
D 9047 7413 46 46 0.51% 0.62%

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 12771 63.4 925 908 187.1
A 3 137 8264 39.31 925 908 187.1
A 0 226 7962 37.7 925 908 187.1
B 3 64 437519 2470.91 924 902 176.7
B 15 33 71934 401.99 924 902 176.7
B 0 189 30360 166.71 924 902 176.7
C 14 238 142407 676.32 893 899 209.2
C 3 233 23828 109.59 893 899 209.2
C 7 247 9974 43.37 893 899 209.2
D 8 195 1278158 5893.44 895 870 216.7
D 12 233 96666 442.01 895 870 216.7
D 12 6 50181 227.52 895 870 216.7

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