ASTROSAT CZTI

Data Quality Report

Orbit 32355

Creation date: 2024-06-27T20:39:16.955927
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/AS1A09_131T01_9000004702_32355cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32355cztM0_level2_quad_clean.evt
Size (bytes)663,914,880137,364,480
Size633.2 MB 131.0 MB
Events in quadrant A3,548,517932,238
Events in quadrant B6,650,559913,282
Events in quadrant C3,922,274915,951
Events in quadrant D5,481,465880,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155603
B0253752
C0165862
D0214652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451620.832103%
B74516789.099450%
C74513054.093410%
D74512743.677359%

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 9086 7453 0 0 0.00% 0.00%
B 9086 7453 223 223 2.45% 2.99%
C 9086 7453 24 24 0.26% 0.32%
D 9086 7453 97 97 1.07% 1.30%

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 12 189 81095 449.33 890 871 178.5
A 13 6 16104 85.32 890 871 178.5
A 13 254 15491 81.89 890 871 178.5
B 6 159 2135732 13023.93 865 842 163.9
B 5 172 739795 4508.0 865 842 163.9
B 10 245 165784 1006.23 865 842 163.9
C 0 10 158095 785.76 858 863 200.1
C 14 238 155742 774.0 858 863 200.1
C 14 67 154231 766.45 858 863 200.1
D 8 195 1263175 6140.95 857 833 205.6
D 11 164 221498 1073.48 857 833 205.6
D 12 218 184187 891.97 857 833 205.6

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