ASTROSAT CZTI

Data Quality Report

Orbit 25322

Creation date: 2024-06-27T19:16:21.995691
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_059T01_9000003706_25322cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25322cztM0_level2_quad_clean.evt
Size (bytes)614,266,560118,039,680
Size585.8 MB 112.6 MB
Events in quadrant A3,687,468779,408
Events in quadrant B3,768,113788,025
Events in quadrant C3,800,916754,881
Events in quadrant D6,811,931704,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163660
B0164620
C0165110
D0255840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7885540.684845%
B7886911.153944%
C78861441.826021%
D788680910.258686%

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 8440 7888 0 0 0.00% 0.00%
B 8441 7889 1 1 0.01% 0.01%
C 8441 7889 0 0 0.00% 0.00%
D 8441 7889 508 508 6.02% 6.44%

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 13 254 12118 58.33 955 934 191.7
A 3 137 8978 41.95 955 934 191.7
A 0 226 7844 36.04 955 934 191.7
B 12 111 22284 117.45 952 927 181.8
B 11 111 20139 105.65 952 927 181.8
B 14 111 18142 94.67 952 927 181.8
C 14 238 146765 676.03 926 933 215.7
C 0 207 18040 79.3 926 933 215.7
C 3 233 9960 41.85 926 933 215.7
D 1 52 2377736 10802.78 907 881 220.0
D 8 195 647569 2939.19 907 881 220.0
D 15 145 121137 546.56 907 881 220.0

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