ASTROSAT CZTI

Data Quality Report

Orbit 03911

Creation date: 2024-06-27T14:35:09.033616
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/AS1G05_172T01_9000000502_03911cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03911cztM0_level2_quad_clean.evt
Size (bytes)531,008,64088,413,120
Size506.4 MB 84.3 MB
Events in quadrant A4,153,034534,401
Events in quadrant B3,599,520551,859
Events in quadrant C3,316,797547,564
Events in quadrant D4,502,381520,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174233
B0155272
C0154402
D0186592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75113354.460125%
B75111031.371322%
C7511811.078418%
D75111652.196778%

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 8051 7513 194 194 2.41% 2.58%
B 8051 7513 0 0 0.00% 0.00%
C 8051 7513 6 6 0.07% 0.08%
D 8051 7513 85 85 1.06% 1.13%

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 0 50 537188 3068.01 852 832 174.8
A 2 79 149904 852.71 852 832 174.8
A 0 118 93655 530.96 852 832 174.8
B 15 204 191391 1134.02 869 848 168.0
B 7 252 14699 82.43 869 848 168.0
B 12 111 13829 77.26 869 848 168.0
C 10 65 30917 153.65 839 840 195.8
C 13 61 7116 32.06 839 840 195.8
C 12 4 4609 19.25 839 840 195.8
D 2 32 524945 2620.01 834 810 200.1
D 10 246 409036 2040.61 834 810 200.1
D 4 95 167594 833.71 834 810 200.1

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
Veto Counter