ASTROSAT CZTI

Data Quality Report

Orbit 21977

Creation date: 2024-06-27T18:34:48.959817
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_094T01_9000003248_21977cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21977cztM0_level2_quad_clean.evt
Size (bytes)704,096,640112,368,960
Size671.5 MB 107.2 MB
Events in quadrant A3,977,747742,627
Events in quadrant B4,096,764747,442
Events in quadrant C3,855,136721,322
Events in quadrant D8,856,552639,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170552
B0173982
C0166382
D0318312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79271081.362432%
B79281702.144299%
C79281351.702825%
D7927128416.197805%

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 8533 7930 0 0 0.00% 0.00%
B 8534 7930 8 8 0.09% 0.10%
C 8534 7930 0 0 0.00% 0.00%
D 8533 7929 1070 1070 12.54% 13.49%

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 2 79 137778 674.48 992 971 202.8
A 13 254 14544 66.91 992 971 202.8
A 3 137 8624 37.73 992 971 202.8
B 0 230 102522 533.92 983 957 190.2
B 3 64 74993 389.2 983 957 190.2
B 0 190 32246 164.49 983 957 190.2
C 14 238 149855 664.29 949 954 224.1
C 13 61 6685 25.57 949 954 224.1
C 14 220 3217 10.1 949 954 224.1
D 7 238 3692082 16701.36 911 885 221.0
D 13 104 894739 4044.37 911 885 221.0
D 12 227 539401 2436.59 911 885 221.0

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