ASTROSAT CZTI

Data Quality Report

Orbit 27419

Creation date: 2024-06-27T19:39:53.217829
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_249T01_9000003934_27419cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27419cztM0_level2_quad_clean.evt
Size (bytes)553,898,88082,085,760
Size528.2 MB 78.3 MB
Events in quadrant A3,501,428509,875
Events in quadrant B3,633,435509,453
Events in quadrant C3,624,274489,157
Events in quadrant D5,530,333478,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147630
B0150100
C0150620
D0214130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71611051.466276%
B71621271.773248%
C71621612.247975%
D71613104.329004%

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 7616 7161 0 0 0.00% 0.00%
B 7617 7162 1 1 0.01% 0.01%
C 7617 7162 10 10 0.13% 0.14%
D 7616 7162 179 179 2.35% 2.50%

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 11580 58.97 903 885 181.3
A 3 137 8831 43.82 903 885 181.3
A 0 226 7694 37.55 903 885 181.3
B 7 205 52975 305.16 888 865 170.8
B 0 190 32202 183.51 888 865 170.8
B 4 200 21457 120.59 888 865 170.8
C 14 238 135699 663.18 859 863 203.3
C 2 16 70551 342.76 859 863 203.3
C 3 233 42103 202.84 859 863 203.3
D 1 52 1799771 8581.89 866 844 209.6
D 2 250 208499 990.63 866 844 209.6
D 12 227 175378 832.62 866 844 209.6

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