ASTROSAT CZTI

Data Quality Report

Orbit 24555

Creation date: 2024-06-27T19:07:13.530512
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/AS1T03_187T01_9000003608_24555cztM0_level2.evt modeM0/AS1T03_187T01_9000003608_24555cztM0_level2_quad_clean.evt
Size (bytes)601,813,440125,429,760
Size573.9 MB 119.6 MB
Events in quadrant A3,680,002835,893
Events in quadrant B3,731,227847,881
Events in quadrant C3,728,803794,891
Events in quadrant D6,552,691773,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161742
B0162272
C0161952
D0249462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78641441.831129%
B78652052.606484%
C78652092.657343%
D78653884.933249%

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 8399 7866 2 2 0.02% 0.03%
B 8400 7867 1 1 0.01% 0.01%
C 8400 7867 1 1 0.01% 0.01%
D 8400 7866 180 180 2.14% 2.29%

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 10 255 13876 67.67 949 928 191.3
A 13 254 12733 61.7 949 928 191.3
A 3 137 8816 41.23 949 928 191.3
B 12 111 22218 117.67 947 921 181.0
B 11 111 19949 105.13 947 921 181.0
B 14 111 17640 92.37 947 921 181.0
C 14 238 145550 689.37 905 908 209.8
C 2 16 15263 68.42 905 908 209.8
C 3 233 12805 56.7 905 908 209.8
D 8 195 2432050 11038.34 899 870 220.2
D 1 255 449648 2037.6 899 870 220.2
D 12 218 114238 514.73 899 870 220.2

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