ASTROSAT CZTI

Data Quality Report

Orbit 19347

Creation date: 2024-06-27T18:01:40.113479
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/AS1A05_204T01_9000002856_19347cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19347cztM0_level2_quad_clean.evt
Size (bytes)483,122,88068,117,760
Size460.7 MB 65.0 MB
Events in quadrant A3,086,698412,513
Events in quadrant B3,146,739415,716
Events in quadrant C3,104,655395,718
Events in quadrant D4,851,900385,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132731
B0133951
C0132511
D0187441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497761.169771%
B6497881.354471%
C6497881.354471%
D64975388.280745%

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 7402 6497 0 0 0.00% 0.00%
B 7402 6497 1 1 0.01% 0.02%
C 7402 6497 0 0 0.00% 0.00%
D 7402 6497 397 397 5.36% 6.11%

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 0 226 6936 37.87 801 782 162.5
A 3 137 6464 34.97 801 782 162.5
A 13 254 5683 30.16 801 782 162.5
B 12 111 18867 117.73 795 773 153.7
B 11 111 16808 104.33 795 773 153.7
B 14 111 15162 93.62 795 773 153.7
C 14 238 119454 663.57 761 766 178.9
C 3 233 15719 83.6 761 766 178.9
C 13 61 5396 25.89 761 766 178.9
D 7 238 1577122 8652.98 748 726 182.2
D 11 176 270031 1478.24 748 726 182.2
D 1 52 100698 548.76 748 726 182.2

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