ASTROSAT CZTI

Data Quality Report

Orbit 09312

Creation date: 2024-06-27T15:44:22.805766
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/AS1G07_002T01_9000001316_09312cztM0_level2.evt modeM0/AS1G07_002T01_9000001316_09312cztM0_level2_quad_clean.evt
Size (bytes)640,477,44085,947,840
Size610.8 MB 82.0 MB
Events in quadrant A5,372,743513,513
Events in quadrant B3,875,131527,773
Events in quadrant C3,765,850524,545
Events in quadrant D5,841,267480,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02134875
B01684418
C01684531
D023195106

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01624
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79944015.016262%
B80123324.143784%
C80052202.748282%
D799987810.976372%

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 8484 8021 35 35 0.41% 0.44%
B 8484 8021 0 0 0.00% 0.00%
C 8484 8021 0 0 0.00% 0.00%
D 8484 8021 570 570 6.72% 7.11%

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 8 5 1253878 6177.26 977 954 202.8
A 5 16 149897 734.33 977 954 202.8
A 1 162 95009 463.72 977 954 202.8
B 12 111 23221 114.18 988 961 195.0
B 11 111 18875 91.89 988 961 195.0
B 0 219 14705 70.5 988 961 195.0
C 10 22 8989 35.71 959 963 224.8
C 9 68 7621 29.62 959 963 224.8
C 13 61 7444 28.83 959 963 224.8
D 12 227 1928392 8168.78 923 899 236.0
D 1 52 152029 640.49 923 899 236.0
D 10 172 116606 490.37 923 899 236.0

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